1 | // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB |
2 | /* Copyright (c) 2015 - 2021 Intel Corporation */ |
3 | #include "main.h" |
4 | #include "trace.h" |
5 | |
6 | static void irdma_cm_post_event(struct irdma_cm_event *event); |
7 | static void irdma_disconnect_worker(struct work_struct *work); |
8 | |
9 | /** |
10 | * irdma_free_sqbuf - put back puda buffer if refcount is 0 |
11 | * @vsi: The VSI structure of the device |
12 | * @bufp: puda buffer to free |
13 | */ |
14 | void irdma_free_sqbuf(struct irdma_sc_vsi *vsi, void *bufp) |
15 | { |
16 | struct irdma_puda_buf *buf = bufp; |
17 | struct irdma_puda_rsrc *ilq = vsi->ilq; |
18 | |
19 | if (refcount_dec_and_test(r: &buf->refcount)) |
20 | irdma_puda_ret_bufpool(rsrc: ilq, buf); |
21 | } |
22 | |
23 | /** |
24 | * irdma_record_ird_ord - Record IRD/ORD passed in |
25 | * @cm_node: connection's node |
26 | * @conn_ird: connection IRD |
27 | * @conn_ord: connection ORD |
28 | */ |
29 | static void irdma_record_ird_ord(struct irdma_cm_node *cm_node, u32 conn_ird, |
30 | u32 conn_ord) |
31 | { |
32 | if (conn_ird > cm_node->dev->hw_attrs.max_hw_ird) |
33 | conn_ird = cm_node->dev->hw_attrs.max_hw_ird; |
34 | |
35 | if (conn_ord > cm_node->dev->hw_attrs.max_hw_ord) |
36 | conn_ord = cm_node->dev->hw_attrs.max_hw_ord; |
37 | else if (!conn_ord && cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO) |
38 | conn_ord = 1; |
39 | cm_node->ird_size = conn_ird; |
40 | cm_node->ord_size = conn_ord; |
41 | } |
42 | |
43 | /** |
44 | * irdma_copy_ip_ntohl - copy IP address from network to host |
45 | * @dst: IP address in host order |
46 | * @src: IP address in network order (big endian) |
47 | */ |
48 | void irdma_copy_ip_ntohl(u32 *dst, __be32 *src) |
49 | { |
50 | *dst++ = ntohl(*src++); |
51 | *dst++ = ntohl(*src++); |
52 | *dst++ = ntohl(*src++); |
53 | *dst = ntohl(*src); |
54 | } |
55 | |
56 | /** |
57 | * irdma_copy_ip_htonl - copy IP address from host to network order |
58 | * @dst: IP address in network order (big endian) |
59 | * @src: IP address in host order |
60 | */ |
61 | void irdma_copy_ip_htonl(__be32 *dst, u32 *src) |
62 | { |
63 | *dst++ = htonl(*src++); |
64 | *dst++ = htonl(*src++); |
65 | *dst++ = htonl(*src++); |
66 | *dst = htonl(*src); |
67 | } |
68 | |
69 | /** |
70 | * irdma_get_addr_info |
71 | * @cm_node: contains ip/tcp info |
72 | * @cm_info: to get a copy of the cm_node ip/tcp info |
73 | */ |
74 | static void irdma_get_addr_info(struct irdma_cm_node *cm_node, |
75 | struct irdma_cm_info *cm_info) |
76 | { |
77 | memset(cm_info, 0, sizeof(*cm_info)); |
78 | cm_info->ipv4 = cm_node->ipv4; |
79 | cm_info->vlan_id = cm_node->vlan_id; |
80 | memcpy(cm_info->loc_addr, cm_node->loc_addr, sizeof(cm_info->loc_addr)); |
81 | memcpy(cm_info->rem_addr, cm_node->rem_addr, sizeof(cm_info->rem_addr)); |
82 | cm_info->loc_port = cm_node->loc_port; |
83 | cm_info->rem_port = cm_node->rem_port; |
84 | } |
85 | |
86 | /** |
87 | * irdma_fill_sockaddr4 - fill in addr info for IPv4 connection |
88 | * @cm_node: connection's node |
89 | * @event: upper layer's cm event |
90 | */ |
91 | static inline void irdma_fill_sockaddr4(struct irdma_cm_node *cm_node, |
92 | struct iw_cm_event *event) |
93 | { |
94 | struct sockaddr_in *laddr = (struct sockaddr_in *)&event->local_addr; |
95 | struct sockaddr_in *raddr = (struct sockaddr_in *)&event->remote_addr; |
96 | |
97 | laddr->sin_family = AF_INET; |
98 | raddr->sin_family = AF_INET; |
99 | |
100 | laddr->sin_port = htons(cm_node->loc_port); |
101 | raddr->sin_port = htons(cm_node->rem_port); |
102 | |
103 | laddr->sin_addr.s_addr = htonl(cm_node->loc_addr[0]); |
104 | raddr->sin_addr.s_addr = htonl(cm_node->rem_addr[0]); |
105 | } |
106 | |
107 | /** |
108 | * irdma_fill_sockaddr6 - fill in addr info for IPv6 connection |
109 | * @cm_node: connection's node |
110 | * @event: upper layer's cm event |
111 | */ |
112 | static inline void irdma_fill_sockaddr6(struct irdma_cm_node *cm_node, |
113 | struct iw_cm_event *event) |
114 | { |
115 | struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&event->local_addr; |
116 | struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)&event->remote_addr; |
117 | |
118 | laddr6->sin6_family = AF_INET6; |
119 | raddr6->sin6_family = AF_INET6; |
120 | |
121 | laddr6->sin6_port = htons(cm_node->loc_port); |
122 | raddr6->sin6_port = htons(cm_node->rem_port); |
123 | |
124 | irdma_copy_ip_htonl(dst: laddr6->sin6_addr.in6_u.u6_addr32, |
125 | src: cm_node->loc_addr); |
126 | irdma_copy_ip_htonl(dst: raddr6->sin6_addr.in6_u.u6_addr32, |
127 | src: cm_node->rem_addr); |
128 | } |
129 | |
130 | /** |
131 | * irdma_get_cmevent_info - for cm event upcall |
132 | * @cm_node: connection's node |
133 | * @cm_id: upper layers cm struct for the event |
134 | * @event: upper layer's cm event |
135 | */ |
136 | static inline void irdma_get_cmevent_info(struct irdma_cm_node *cm_node, |
137 | struct iw_cm_id *cm_id, |
138 | struct iw_cm_event *event) |
139 | { |
140 | memcpy(&event->local_addr, &cm_id->m_local_addr, |
141 | sizeof(event->local_addr)); |
142 | memcpy(&event->remote_addr, &cm_id->m_remote_addr, |
143 | sizeof(event->remote_addr)); |
144 | if (cm_node) { |
145 | event->private_data = cm_node->pdata_buf; |
146 | event->private_data_len = (u8)cm_node->pdata.size; |
147 | event->ird = cm_node->ird_size; |
148 | event->ord = cm_node->ord_size; |
149 | } |
150 | } |
151 | |
152 | /** |
153 | * irdma_send_cm_event - upcall cm's event handler |
154 | * @cm_node: connection's node |
155 | * @cm_id: upper layer's cm info struct |
156 | * @type: Event type to indicate |
157 | * @status: status for the event type |
158 | */ |
159 | static int irdma_send_cm_event(struct irdma_cm_node *cm_node, |
160 | struct iw_cm_id *cm_id, |
161 | enum iw_cm_event_type type, int status) |
162 | { |
163 | struct iw_cm_event event = {}; |
164 | |
165 | event.event = type; |
166 | event.status = status; |
167 | trace_irdma_send_cm_event(cm_node, cm_id, type, status, |
168 | caller: __builtin_return_address(0)); |
169 | |
170 | ibdev_dbg(&cm_node->iwdev->ibdev, |
171 | "CM: cm_node %p cm_id=%p state=%d accel=%d event_type=%d status=%d\n" , |
172 | cm_node, cm_id, cm_node->accelerated, cm_node->state, type, |
173 | status); |
174 | |
175 | switch (type) { |
176 | case IW_CM_EVENT_CONNECT_REQUEST: |
177 | if (cm_node->ipv4) |
178 | irdma_fill_sockaddr4(cm_node, event: &event); |
179 | else |
180 | irdma_fill_sockaddr6(cm_node, event: &event); |
181 | event.provider_data = cm_node; |
182 | event.private_data = cm_node->pdata_buf; |
183 | event.private_data_len = (u8)cm_node->pdata.size; |
184 | event.ird = cm_node->ird_size; |
185 | break; |
186 | case IW_CM_EVENT_CONNECT_REPLY: |
187 | irdma_get_cmevent_info(cm_node, cm_id, event: &event); |
188 | break; |
189 | case IW_CM_EVENT_ESTABLISHED: |
190 | event.ird = cm_node->ird_size; |
191 | event.ord = cm_node->ord_size; |
192 | break; |
193 | case IW_CM_EVENT_DISCONNECT: |
194 | case IW_CM_EVENT_CLOSE: |
195 | /* Wait if we are in RTS but havent issued the iwcm event upcall */ |
196 | if (!cm_node->accelerated) |
197 | wait_for_completion(&cm_node->establish_comp); |
198 | break; |
199 | default: |
200 | return -EINVAL; |
201 | } |
202 | |
203 | return cm_id->event_handler(cm_id, &event); |
204 | } |
205 | |
206 | /** |
207 | * irdma_timer_list_prep - add connection nodes to a list to perform timer tasks |
208 | * @cm_core: cm's core |
209 | * @timer_list: a timer list to which cm_node will be selected |
210 | */ |
211 | static void irdma_timer_list_prep(struct irdma_cm_core *cm_core, |
212 | struct list_head *timer_list) |
213 | { |
214 | struct irdma_cm_node *cm_node; |
215 | int bkt; |
216 | |
217 | hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) { |
218 | if ((cm_node->close_entry || cm_node->send_entry) && |
219 | refcount_inc_not_zero(r: &cm_node->refcnt)) |
220 | list_add(new: &cm_node->timer_entry, head: timer_list); |
221 | } |
222 | } |
223 | |
224 | /** |
225 | * irdma_create_event - create cm event |
226 | * @cm_node: connection's node |
227 | * @type: Event type to generate |
228 | */ |
229 | static struct irdma_cm_event *irdma_create_event(struct irdma_cm_node *cm_node, |
230 | enum irdma_cm_event_type type) |
231 | { |
232 | struct irdma_cm_event *event; |
233 | |
234 | if (!cm_node->cm_id) |
235 | return NULL; |
236 | |
237 | event = kzalloc(size: sizeof(*event), GFP_ATOMIC); |
238 | |
239 | if (!event) |
240 | return NULL; |
241 | |
242 | event->type = type; |
243 | event->cm_node = cm_node; |
244 | memcpy(event->cm_info.rem_addr, cm_node->rem_addr, |
245 | sizeof(event->cm_info.rem_addr)); |
246 | memcpy(event->cm_info.loc_addr, cm_node->loc_addr, |
247 | sizeof(event->cm_info.loc_addr)); |
248 | event->cm_info.rem_port = cm_node->rem_port; |
249 | event->cm_info.loc_port = cm_node->loc_port; |
250 | event->cm_info.cm_id = cm_node->cm_id; |
251 | ibdev_dbg(&cm_node->iwdev->ibdev, |
252 | "CM: node=%p event=%p type=%u dst=%pI4 src=%pI4\n" , cm_node, |
253 | event, type, event->cm_info.loc_addr, |
254 | event->cm_info.rem_addr); |
255 | trace_irdma_create_event(cm_node, type, caller: __builtin_return_address(0)); |
256 | irdma_cm_post_event(event); |
257 | |
258 | return event; |
259 | } |
260 | |
261 | /** |
262 | * irdma_free_retrans_entry - free send entry |
263 | * @cm_node: connection's node |
264 | */ |
265 | static void irdma_free_retrans_entry(struct irdma_cm_node *cm_node) |
266 | { |
267 | struct irdma_device *iwdev = cm_node->iwdev; |
268 | struct irdma_timer_entry *send_entry; |
269 | |
270 | send_entry = cm_node->send_entry; |
271 | if (!send_entry) |
272 | return; |
273 | |
274 | cm_node->send_entry = NULL; |
275 | irdma_free_sqbuf(vsi: &iwdev->vsi, bufp: send_entry->sqbuf); |
276 | kfree(objp: send_entry); |
277 | refcount_dec(r: &cm_node->refcnt); |
278 | } |
279 | |
280 | /** |
281 | * irdma_cleanup_retrans_entry - free send entry with lock |
282 | * @cm_node: connection's node |
283 | */ |
284 | static void irdma_cleanup_retrans_entry(struct irdma_cm_node *cm_node) |
285 | { |
286 | unsigned long flags; |
287 | |
288 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
289 | irdma_free_retrans_entry(cm_node); |
290 | spin_unlock_irqrestore(lock: &cm_node->retrans_list_lock, flags); |
291 | } |
292 | |
293 | /** |
294 | * irdma_form_ah_cm_frame - get a free packet and build frame with address handle |
295 | * @cm_node: connection's node ionfo to use in frame |
296 | * @options: pointer to options info |
297 | * @hdr: pointer mpa header |
298 | * @pdata: pointer to private data |
299 | * @flags: indicates FIN or ACK |
300 | */ |
301 | static struct irdma_puda_buf *irdma_form_ah_cm_frame(struct irdma_cm_node *cm_node, |
302 | struct irdma_kmem_info *options, |
303 | struct irdma_kmem_info *hdr, |
304 | struct irdma_mpa_priv_info *pdata, |
305 | u8 flags) |
306 | { |
307 | struct irdma_puda_buf *sqbuf; |
308 | struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi; |
309 | u8 *buf; |
310 | struct tcphdr *tcph; |
311 | u16 pktsize; |
312 | u32 opts_len = 0; |
313 | u32 pd_len = 0; |
314 | u32 hdr_len = 0; |
315 | |
316 | if (!cm_node->ah || !cm_node->ah->ah_info.ah_valid) { |
317 | ibdev_dbg(&cm_node->iwdev->ibdev, "CM: AH invalid\n" ); |
318 | return NULL; |
319 | } |
320 | |
321 | sqbuf = irdma_puda_get_bufpool(rsrc: vsi->ilq); |
322 | if (!sqbuf) { |
323 | ibdev_dbg(&cm_node->iwdev->ibdev, "CM: SQ buf NULL\n" ); |
324 | return NULL; |
325 | } |
326 | |
327 | sqbuf->ah_id = cm_node->ah->ah_info.ah_idx; |
328 | buf = sqbuf->mem.va; |
329 | if (options) |
330 | opts_len = (u32)options->size; |
331 | |
332 | if (hdr) |
333 | hdr_len = hdr->size; |
334 | |
335 | if (pdata) |
336 | pd_len = pdata->size; |
337 | |
338 | pktsize = sizeof(*tcph) + opts_len + hdr_len + pd_len; |
339 | |
340 | memset(buf, 0, sizeof(*tcph)); |
341 | |
342 | sqbuf->totallen = pktsize; |
343 | sqbuf->tcphlen = sizeof(*tcph) + opts_len; |
344 | sqbuf->scratch = cm_node; |
345 | |
346 | tcph = (struct tcphdr *)buf; |
347 | buf += sizeof(*tcph); |
348 | |
349 | tcph->source = htons(cm_node->loc_port); |
350 | tcph->dest = htons(cm_node->rem_port); |
351 | tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num); |
352 | |
353 | if (flags & SET_ACK) { |
354 | cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt; |
355 | tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); |
356 | tcph->ack = 1; |
357 | } else { |
358 | tcph->ack_seq = 0; |
359 | } |
360 | |
361 | if (flags & SET_SYN) { |
362 | cm_node->tcp_cntxt.loc_seq_num++; |
363 | tcph->syn = 1; |
364 | } else { |
365 | cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len; |
366 | } |
367 | |
368 | if (flags & SET_FIN) { |
369 | cm_node->tcp_cntxt.loc_seq_num++; |
370 | tcph->fin = 1; |
371 | } |
372 | |
373 | if (flags & SET_RST) |
374 | tcph->rst = 1; |
375 | |
376 | tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2); |
377 | sqbuf->tcphlen = tcph->doff << 2; |
378 | tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); |
379 | tcph->urg_ptr = 0; |
380 | |
381 | if (opts_len) { |
382 | memcpy(buf, options->addr, opts_len); |
383 | buf += opts_len; |
384 | } |
385 | |
386 | if (hdr_len) { |
387 | memcpy(buf, hdr->addr, hdr_len); |
388 | buf += hdr_len; |
389 | } |
390 | |
391 | if (pdata && pdata->addr) |
392 | memcpy(buf, pdata->addr, pdata->size); |
393 | |
394 | refcount_set(r: &sqbuf->refcount, n: 1); |
395 | |
396 | print_hex_dump_debug("ILQ: TRANSMIT ILQ BUFFER" , DUMP_PREFIX_OFFSET, |
397 | 16, 8, sqbuf->mem.va, sqbuf->totallen, false); |
398 | |
399 | return sqbuf; |
400 | } |
401 | |
402 | /** |
403 | * irdma_form_uda_cm_frame - get a free packet and build frame full tcpip packet |
404 | * @cm_node: connection's node ionfo to use in frame |
405 | * @options: pointer to options info |
406 | * @hdr: pointer mpa header |
407 | * @pdata: pointer to private data |
408 | * @flags: indicates FIN or ACK |
409 | */ |
410 | static struct irdma_puda_buf *irdma_form_uda_cm_frame(struct irdma_cm_node *cm_node, |
411 | struct irdma_kmem_info *options, |
412 | struct irdma_kmem_info *hdr, |
413 | struct irdma_mpa_priv_info *pdata, |
414 | u8 flags) |
415 | { |
416 | struct irdma_puda_buf *sqbuf; |
417 | struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi; |
418 | u8 *buf; |
419 | |
420 | struct tcphdr *tcph; |
421 | struct iphdr *iph; |
422 | struct ipv6hdr *ip6h; |
423 | struct ethhdr *ethh; |
424 | u16 pktsize; |
425 | u16 eth_hlen = ETH_HLEN; |
426 | u32 opts_len = 0; |
427 | u32 pd_len = 0; |
428 | u32 hdr_len = 0; |
429 | |
430 | u16 vtag; |
431 | |
432 | sqbuf = irdma_puda_get_bufpool(rsrc: vsi->ilq); |
433 | if (!sqbuf) |
434 | return NULL; |
435 | |
436 | buf = sqbuf->mem.va; |
437 | |
438 | if (options) |
439 | opts_len = (u32)options->size; |
440 | |
441 | if (hdr) |
442 | hdr_len = hdr->size; |
443 | |
444 | if (pdata) |
445 | pd_len = pdata->size; |
446 | |
447 | if (cm_node->vlan_id < VLAN_N_VID) |
448 | eth_hlen += 4; |
449 | |
450 | if (cm_node->ipv4) |
451 | pktsize = sizeof(*iph) + sizeof(*tcph); |
452 | else |
453 | pktsize = sizeof(*ip6h) + sizeof(*tcph); |
454 | pktsize += opts_len + hdr_len + pd_len; |
455 | |
456 | memset(buf, 0, eth_hlen + pktsize); |
457 | |
458 | sqbuf->totallen = pktsize + eth_hlen; |
459 | sqbuf->maclen = eth_hlen; |
460 | sqbuf->tcphlen = sizeof(*tcph) + opts_len; |
461 | sqbuf->scratch = cm_node; |
462 | |
463 | ethh = (struct ethhdr *)buf; |
464 | buf += eth_hlen; |
465 | |
466 | if (cm_node->do_lpb) |
467 | sqbuf->do_lpb = true; |
468 | |
469 | if (cm_node->ipv4) { |
470 | sqbuf->ipv4 = true; |
471 | |
472 | iph = (struct iphdr *)buf; |
473 | buf += sizeof(*iph); |
474 | tcph = (struct tcphdr *)buf; |
475 | buf += sizeof(*tcph); |
476 | |
477 | ether_addr_copy(dst: ethh->h_dest, src: cm_node->rem_mac); |
478 | ether_addr_copy(dst: ethh->h_source, src: cm_node->loc_mac); |
479 | if (cm_node->vlan_id < VLAN_N_VID) { |
480 | ((struct vlan_ethhdr *)ethh)->h_vlan_proto = |
481 | htons(ETH_P_8021Q); |
482 | vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) | |
483 | cm_node->vlan_id; |
484 | ((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag); |
485 | |
486 | ((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto = |
487 | htons(ETH_P_IP); |
488 | } else { |
489 | ethh->h_proto = htons(ETH_P_IP); |
490 | } |
491 | |
492 | iph->version = IPVERSION; |
493 | iph->ihl = 5; /* 5 * 4Byte words, IP headr len */ |
494 | iph->tos = cm_node->tos; |
495 | iph->tot_len = htons(pktsize); |
496 | iph->id = htons(++cm_node->tcp_cntxt.loc_id); |
497 | |
498 | iph->frag_off = htons(0x4000); |
499 | iph->ttl = 0x40; |
500 | iph->protocol = IPPROTO_TCP; |
501 | iph->saddr = htonl(cm_node->loc_addr[0]); |
502 | iph->daddr = htonl(cm_node->rem_addr[0]); |
503 | } else { |
504 | sqbuf->ipv4 = false; |
505 | ip6h = (struct ipv6hdr *)buf; |
506 | buf += sizeof(*ip6h); |
507 | tcph = (struct tcphdr *)buf; |
508 | buf += sizeof(*tcph); |
509 | |
510 | ether_addr_copy(dst: ethh->h_dest, src: cm_node->rem_mac); |
511 | ether_addr_copy(dst: ethh->h_source, src: cm_node->loc_mac); |
512 | if (cm_node->vlan_id < VLAN_N_VID) { |
513 | ((struct vlan_ethhdr *)ethh)->h_vlan_proto = |
514 | htons(ETH_P_8021Q); |
515 | vtag = (cm_node->user_pri << VLAN_PRIO_SHIFT) | |
516 | cm_node->vlan_id; |
517 | ((struct vlan_ethhdr *)ethh)->h_vlan_TCI = htons(vtag); |
518 | ((struct vlan_ethhdr *)ethh)->h_vlan_encapsulated_proto = |
519 | htons(ETH_P_IPV6); |
520 | } else { |
521 | ethh->h_proto = htons(ETH_P_IPV6); |
522 | } |
523 | ip6h->version = 6; |
524 | ip6h->priority = cm_node->tos >> 4; |
525 | ip6h->flow_lbl[0] = cm_node->tos << 4; |
526 | ip6h->flow_lbl[1] = 0; |
527 | ip6h->flow_lbl[2] = 0; |
528 | ip6h->payload_len = htons(pktsize - sizeof(*ip6h)); |
529 | ip6h->nexthdr = 6; |
530 | ip6h->hop_limit = 128; |
531 | irdma_copy_ip_htonl(dst: ip6h->saddr.in6_u.u6_addr32, |
532 | src: cm_node->loc_addr); |
533 | irdma_copy_ip_htonl(dst: ip6h->daddr.in6_u.u6_addr32, |
534 | src: cm_node->rem_addr); |
535 | } |
536 | |
537 | tcph->source = htons(cm_node->loc_port); |
538 | tcph->dest = htons(cm_node->rem_port); |
539 | tcph->seq = htonl(cm_node->tcp_cntxt.loc_seq_num); |
540 | |
541 | if (flags & SET_ACK) { |
542 | cm_node->tcp_cntxt.loc_ack_num = cm_node->tcp_cntxt.rcv_nxt; |
543 | tcph->ack_seq = htonl(cm_node->tcp_cntxt.loc_ack_num); |
544 | tcph->ack = 1; |
545 | } else { |
546 | tcph->ack_seq = 0; |
547 | } |
548 | |
549 | if (flags & SET_SYN) { |
550 | cm_node->tcp_cntxt.loc_seq_num++; |
551 | tcph->syn = 1; |
552 | } else { |
553 | cm_node->tcp_cntxt.loc_seq_num += hdr_len + pd_len; |
554 | } |
555 | |
556 | if (flags & SET_FIN) { |
557 | cm_node->tcp_cntxt.loc_seq_num++; |
558 | tcph->fin = 1; |
559 | } |
560 | |
561 | if (flags & SET_RST) |
562 | tcph->rst = 1; |
563 | |
564 | tcph->doff = (u16)((sizeof(*tcph) + opts_len + 3) >> 2); |
565 | sqbuf->tcphlen = tcph->doff << 2; |
566 | tcph->window = htons(cm_node->tcp_cntxt.rcv_wnd); |
567 | tcph->urg_ptr = 0; |
568 | |
569 | if (opts_len) { |
570 | memcpy(buf, options->addr, opts_len); |
571 | buf += opts_len; |
572 | } |
573 | |
574 | if (hdr_len) { |
575 | memcpy(buf, hdr->addr, hdr_len); |
576 | buf += hdr_len; |
577 | } |
578 | |
579 | if (pdata && pdata->addr) |
580 | memcpy(buf, pdata->addr, pdata->size); |
581 | |
582 | refcount_set(r: &sqbuf->refcount, n: 1); |
583 | |
584 | print_hex_dump_debug("ILQ: TRANSMIT ILQ BUFFER" , DUMP_PREFIX_OFFSET, |
585 | 16, 8, sqbuf->mem.va, sqbuf->totallen, false); |
586 | return sqbuf; |
587 | } |
588 | |
589 | /** |
590 | * irdma_send_reset - Send RST packet |
591 | * @cm_node: connection's node |
592 | */ |
593 | int irdma_send_reset(struct irdma_cm_node *cm_node) |
594 | { |
595 | struct irdma_puda_buf *sqbuf; |
596 | int flags = SET_RST | SET_ACK; |
597 | |
598 | trace_irdma_send_reset(cm_node, type: 0, caller: __builtin_return_address(0)); |
599 | sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL, |
600 | flags); |
601 | if (!sqbuf) |
602 | return -ENOMEM; |
603 | |
604 | ibdev_dbg(&cm_node->iwdev->ibdev, |
605 | "CM: caller: %pS cm_node %p cm_id=%p accel=%d state=%d rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\n" , |
606 | __builtin_return_address(0), cm_node, cm_node->cm_id, |
607 | cm_node->accelerated, cm_node->state, cm_node->rem_port, |
608 | cm_node->loc_port, cm_node->rem_addr, cm_node->loc_addr); |
609 | |
610 | return irdma_schedule_cm_timer(cm_node, sqbuf, type: IRDMA_TIMER_TYPE_SEND, send_retrans: 0, |
611 | close_when_complete: 1); |
612 | } |
613 | |
614 | /** |
615 | * irdma_active_open_err - send event for active side cm error |
616 | * @cm_node: connection's node |
617 | * @reset: Flag to send reset or not |
618 | */ |
619 | static void irdma_active_open_err(struct irdma_cm_node *cm_node, bool reset) |
620 | { |
621 | trace_irdma_active_open_err(cm_node, reset, |
622 | caller: __builtin_return_address(0)); |
623 | irdma_cleanup_retrans_entry(cm_node); |
624 | cm_node->cm_core->stats_connect_errs++; |
625 | if (reset) { |
626 | ibdev_dbg(&cm_node->iwdev->ibdev, |
627 | "CM: cm_node=%p state=%d\n" , cm_node, |
628 | cm_node->state); |
629 | refcount_inc(r: &cm_node->refcnt); |
630 | irdma_send_reset(cm_node); |
631 | } |
632 | |
633 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
634 | irdma_create_event(cm_node, type: IRDMA_CM_EVENT_ABORTED); |
635 | } |
636 | |
637 | /** |
638 | * irdma_passive_open_err - handle passive side cm error |
639 | * @cm_node: connection's node |
640 | * @reset: send reset or just free cm_node |
641 | */ |
642 | static void irdma_passive_open_err(struct irdma_cm_node *cm_node, bool reset) |
643 | { |
644 | irdma_cleanup_retrans_entry(cm_node); |
645 | cm_node->cm_core->stats_passive_errs++; |
646 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
647 | ibdev_dbg(&cm_node->iwdev->ibdev, "CM: cm_node=%p state =%d\n" , |
648 | cm_node, cm_node->state); |
649 | trace_irdma_passive_open_err(cm_node, reset, |
650 | caller: __builtin_return_address(0)); |
651 | if (reset) |
652 | irdma_send_reset(cm_node); |
653 | else |
654 | irdma_rem_ref_cm_node(cm_node); |
655 | } |
656 | |
657 | /** |
658 | * irdma_event_connect_error - to create connect error event |
659 | * @event: cm information for connect event |
660 | */ |
661 | static void irdma_event_connect_error(struct irdma_cm_event *event) |
662 | { |
663 | struct irdma_qp *iwqp; |
664 | struct iw_cm_id *cm_id; |
665 | |
666 | cm_id = event->cm_node->cm_id; |
667 | if (!cm_id) |
668 | return; |
669 | |
670 | iwqp = cm_id->provider_data; |
671 | |
672 | if (!iwqp || !iwqp->iwdev) |
673 | return; |
674 | |
675 | iwqp->cm_id = NULL; |
676 | cm_id->provider_data = NULL; |
677 | irdma_send_cm_event(cm_node: event->cm_node, cm_id, type: IW_CM_EVENT_CONNECT_REPLY, |
678 | status: -ECONNRESET); |
679 | irdma_rem_ref_cm_node(cm_node: event->cm_node); |
680 | } |
681 | |
682 | /** |
683 | * irdma_process_options - process options from TCP header |
684 | * @cm_node: connection's node |
685 | * @optionsloc: point to start of options |
686 | * @optionsize: size of all options |
687 | * @syn_pkt: flag if syn packet |
688 | */ |
689 | static int irdma_process_options(struct irdma_cm_node *cm_node, u8 *optionsloc, |
690 | u32 optionsize, u32 syn_pkt) |
691 | { |
692 | u32 tmp; |
693 | u32 offset = 0; |
694 | union all_known_options *all_options; |
695 | char got_mss_option = 0; |
696 | |
697 | while (offset < optionsize) { |
698 | all_options = (union all_known_options *)(optionsloc + offset); |
699 | switch (all_options->base.optionnum) { |
700 | case OPTION_NUM_EOL: |
701 | offset = optionsize; |
702 | break; |
703 | case OPTION_NUM_NONE: |
704 | offset += 1; |
705 | continue; |
706 | case OPTION_NUM_MSS: |
707 | ibdev_dbg(&cm_node->iwdev->ibdev, |
708 | "CM: MSS Length: %d Offset: %d Size: %d\n" , |
709 | all_options->mss.len, offset, optionsize); |
710 | got_mss_option = 1; |
711 | if (all_options->mss.len != 4) |
712 | return -EINVAL; |
713 | tmp = ntohs(all_options->mss.mss); |
714 | if ((cm_node->ipv4 && |
715 | (tmp + IRDMA_MTU_TO_MSS_IPV4) < IRDMA_MIN_MTU_IPV4) || |
716 | (!cm_node->ipv4 && |
717 | (tmp + IRDMA_MTU_TO_MSS_IPV6) < IRDMA_MIN_MTU_IPV6)) |
718 | return -EINVAL; |
719 | if (tmp < cm_node->tcp_cntxt.mss) |
720 | cm_node->tcp_cntxt.mss = tmp; |
721 | break; |
722 | case OPTION_NUM_WINDOW_SCALE: |
723 | cm_node->tcp_cntxt.snd_wscale = |
724 | all_options->windowscale.shiftcount; |
725 | break; |
726 | default: |
727 | ibdev_dbg(&cm_node->iwdev->ibdev, |
728 | "CM: Unsupported TCP Option: %x\n" , |
729 | all_options->base.optionnum); |
730 | break; |
731 | } |
732 | offset += all_options->base.len; |
733 | } |
734 | if (!got_mss_option && syn_pkt) |
735 | cm_node->tcp_cntxt.mss = IRDMA_CM_DEFAULT_MSS; |
736 | |
737 | return 0; |
738 | } |
739 | |
740 | /** |
741 | * irdma_handle_tcp_options - setup TCP context info after parsing TCP options |
742 | * @cm_node: connection's node |
743 | * @tcph: pointer tcp header |
744 | * @optionsize: size of options rcvd |
745 | * @passive: active or passive flag |
746 | */ |
747 | static int irdma_handle_tcp_options(struct irdma_cm_node *cm_node, |
748 | struct tcphdr *tcph, int optionsize, |
749 | int passive) |
750 | { |
751 | u8 *optionsloc = (u8 *)&tcph[1]; |
752 | int ret; |
753 | |
754 | if (optionsize) { |
755 | ret = irdma_process_options(cm_node, optionsloc, optionsize, |
756 | syn_pkt: (u32)tcph->syn); |
757 | if (ret) { |
758 | ibdev_dbg(&cm_node->iwdev->ibdev, |
759 | "CM: Node %p, Sending Reset\n" , cm_node); |
760 | if (passive) |
761 | irdma_passive_open_err(cm_node, reset: true); |
762 | else |
763 | irdma_active_open_err(cm_node, reset: true); |
764 | return ret; |
765 | } |
766 | } |
767 | |
768 | cm_node->tcp_cntxt.snd_wnd = ntohs(tcph->window) |
769 | << cm_node->tcp_cntxt.snd_wscale; |
770 | |
771 | if (cm_node->tcp_cntxt.snd_wnd > cm_node->tcp_cntxt.max_snd_wnd) |
772 | cm_node->tcp_cntxt.max_snd_wnd = cm_node->tcp_cntxt.snd_wnd; |
773 | |
774 | return 0; |
775 | } |
776 | |
777 | /** |
778 | * irdma_build_mpa_v1 - build a MPA V1 frame |
779 | * @cm_node: connection's node |
780 | * @start_addr: address where to build frame |
781 | * @mpa_key: to do read0 or write0 |
782 | */ |
783 | static void irdma_build_mpa_v1(struct irdma_cm_node *cm_node, void *start_addr, |
784 | u8 mpa_key) |
785 | { |
786 | struct ietf_mpa_v1 *mpa_frame = start_addr; |
787 | |
788 | switch (mpa_key) { |
789 | case MPA_KEY_REQUEST: |
790 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REQ, IETF_MPA_KEY_SIZE); |
791 | break; |
792 | case MPA_KEY_REPLY: |
793 | memcpy(mpa_frame->key, IEFT_MPA_KEY_REP, IETF_MPA_KEY_SIZE); |
794 | break; |
795 | default: |
796 | break; |
797 | } |
798 | mpa_frame->flags = IETF_MPA_FLAGS_CRC; |
799 | mpa_frame->rev = cm_node->mpa_frame_rev; |
800 | mpa_frame->priv_data_len = htons(cm_node->pdata.size); |
801 | } |
802 | |
803 | /** |
804 | * irdma_build_mpa_v2 - build a MPA V2 frame |
805 | * @cm_node: connection's node |
806 | * @start_addr: buffer start address |
807 | * @mpa_key: to do read0 or write0 |
808 | */ |
809 | static void irdma_build_mpa_v2(struct irdma_cm_node *cm_node, void *start_addr, |
810 | u8 mpa_key) |
811 | { |
812 | struct ietf_mpa_v2 *mpa_frame = start_addr; |
813 | struct ietf_rtr_msg *rtr_msg = &mpa_frame->rtr_msg; |
814 | u16 ctrl_ird, ctrl_ord; |
815 | |
816 | /* initialize the upper 5 bytes of the frame */ |
817 | irdma_build_mpa_v1(cm_node, start_addr, mpa_key); |
818 | mpa_frame->flags |= IETF_MPA_V2_FLAG; |
819 | if (cm_node->iwdev->iw_ooo) { |
820 | mpa_frame->flags |= IETF_MPA_FLAGS_MARKERS; |
821 | cm_node->rcv_mark_en = true; |
822 | } |
823 | mpa_frame->priv_data_len = cpu_to_be16(be16_to_cpu(mpa_frame->priv_data_len) + |
824 | IETF_RTR_MSG_SIZE); |
825 | |
826 | /* initialize RTR msg */ |
827 | if (cm_node->mpav2_ird_ord == IETF_NO_IRD_ORD) { |
828 | ctrl_ird = IETF_NO_IRD_ORD; |
829 | ctrl_ord = IETF_NO_IRD_ORD; |
830 | } else { |
831 | ctrl_ird = (cm_node->ird_size > IETF_NO_IRD_ORD) ? |
832 | IETF_NO_IRD_ORD : |
833 | cm_node->ird_size; |
834 | ctrl_ord = (cm_node->ord_size > IETF_NO_IRD_ORD) ? |
835 | IETF_NO_IRD_ORD : |
836 | cm_node->ord_size; |
837 | } |
838 | ctrl_ird |= IETF_PEER_TO_PEER; |
839 | |
840 | switch (mpa_key) { |
841 | case MPA_KEY_REQUEST: |
842 | ctrl_ord |= IETF_RDMA0_WRITE; |
843 | ctrl_ord |= IETF_RDMA0_READ; |
844 | break; |
845 | case MPA_KEY_REPLY: |
846 | switch (cm_node->send_rdma0_op) { |
847 | case SEND_RDMA_WRITE_ZERO: |
848 | ctrl_ord |= IETF_RDMA0_WRITE; |
849 | break; |
850 | case SEND_RDMA_READ_ZERO: |
851 | ctrl_ord |= IETF_RDMA0_READ; |
852 | break; |
853 | } |
854 | break; |
855 | default: |
856 | break; |
857 | } |
858 | rtr_msg->ctrl_ird = htons(ctrl_ird); |
859 | rtr_msg->ctrl_ord = htons(ctrl_ord); |
860 | } |
861 | |
862 | /** |
863 | * irdma_cm_build_mpa_frame - build mpa frame for mpa version 1 or version 2 |
864 | * @cm_node: connection's node |
865 | * @mpa: mpa: data buffer |
866 | * @mpa_key: to do read0 or write0 |
867 | */ |
868 | static int irdma_cm_build_mpa_frame(struct irdma_cm_node *cm_node, |
869 | struct irdma_kmem_info *mpa, u8 mpa_key) |
870 | { |
871 | int hdr_len = 0; |
872 | |
873 | switch (cm_node->mpa_frame_rev) { |
874 | case IETF_MPA_V1: |
875 | hdr_len = sizeof(struct ietf_mpa_v1); |
876 | irdma_build_mpa_v1(cm_node, start_addr: mpa->addr, mpa_key); |
877 | break; |
878 | case IETF_MPA_V2: |
879 | hdr_len = sizeof(struct ietf_mpa_v2); |
880 | irdma_build_mpa_v2(cm_node, start_addr: mpa->addr, mpa_key); |
881 | break; |
882 | default: |
883 | break; |
884 | } |
885 | |
886 | return hdr_len; |
887 | } |
888 | |
889 | /** |
890 | * irdma_send_mpa_request - active node send mpa request to passive node |
891 | * @cm_node: connection's node |
892 | */ |
893 | static int irdma_send_mpa_request(struct irdma_cm_node *cm_node) |
894 | { |
895 | struct irdma_puda_buf *sqbuf; |
896 | |
897 | cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame; |
898 | cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node, |
899 | mpa: &cm_node->mpa_hdr, |
900 | mpa_key: MPA_KEY_REQUEST); |
901 | if (!cm_node->mpa_hdr.size) { |
902 | ibdev_dbg(&cm_node->iwdev->ibdev, |
903 | "CM: mpa size = %d\n" , cm_node->mpa_hdr.size); |
904 | return -EINVAL; |
905 | } |
906 | |
907 | sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, |
908 | &cm_node->mpa_hdr, |
909 | &cm_node->pdata, SET_ACK); |
910 | if (!sqbuf) |
911 | return -ENOMEM; |
912 | |
913 | return irdma_schedule_cm_timer(cm_node, sqbuf, type: IRDMA_TIMER_TYPE_SEND, send_retrans: 1, |
914 | close_when_complete: 0); |
915 | } |
916 | |
917 | /** |
918 | * irdma_send_mpa_reject - |
919 | * @cm_node: connection's node |
920 | * @pdata: reject data for connection |
921 | * @plen: length of reject data |
922 | */ |
923 | static int irdma_send_mpa_reject(struct irdma_cm_node *cm_node, |
924 | const void *pdata, u8 plen) |
925 | { |
926 | struct irdma_puda_buf *sqbuf; |
927 | struct irdma_mpa_priv_info priv_info; |
928 | |
929 | cm_node->mpa_hdr.addr = &cm_node->mpa_v2_frame; |
930 | cm_node->mpa_hdr.size = irdma_cm_build_mpa_frame(cm_node, |
931 | mpa: &cm_node->mpa_hdr, |
932 | mpa_key: MPA_KEY_REPLY); |
933 | |
934 | cm_node->mpa_frame.flags |= IETF_MPA_FLAGS_REJECT; |
935 | priv_info.addr = pdata; |
936 | priv_info.size = plen; |
937 | |
938 | sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, |
939 | &cm_node->mpa_hdr, &priv_info, |
940 | SET_ACK | SET_FIN); |
941 | if (!sqbuf) |
942 | return -ENOMEM; |
943 | |
944 | cm_node->state = IRDMA_CM_STATE_FIN_WAIT1; |
945 | |
946 | return irdma_schedule_cm_timer(cm_node, sqbuf, type: IRDMA_TIMER_TYPE_SEND, send_retrans: 1, |
947 | close_when_complete: 0); |
948 | } |
949 | |
950 | /** |
951 | * irdma_negotiate_mpa_v2_ird_ord - negotiate MPAv2 IRD/ORD |
952 | * @cm_node: connection's node |
953 | * @buf: Data pointer |
954 | */ |
955 | static int irdma_negotiate_mpa_v2_ird_ord(struct irdma_cm_node *cm_node, |
956 | u8 *buf) |
957 | { |
958 | struct ietf_mpa_v2 *mpa_v2_frame; |
959 | struct ietf_rtr_msg *rtr_msg; |
960 | u16 ird_size; |
961 | u16 ord_size; |
962 | u16 ctrl_ord; |
963 | u16 ctrl_ird; |
964 | |
965 | mpa_v2_frame = (struct ietf_mpa_v2 *)buf; |
966 | rtr_msg = &mpa_v2_frame->rtr_msg; |
967 | |
968 | /* parse rtr message */ |
969 | ctrl_ord = ntohs(rtr_msg->ctrl_ord); |
970 | ctrl_ird = ntohs(rtr_msg->ctrl_ird); |
971 | ird_size = ctrl_ird & IETF_NO_IRD_ORD; |
972 | ord_size = ctrl_ord & IETF_NO_IRD_ORD; |
973 | |
974 | if (!(ctrl_ird & IETF_PEER_TO_PEER)) |
975 | return -EOPNOTSUPP; |
976 | |
977 | if (ird_size == IETF_NO_IRD_ORD || ord_size == IETF_NO_IRD_ORD) { |
978 | cm_node->mpav2_ird_ord = IETF_NO_IRD_ORD; |
979 | goto negotiate_done; |
980 | } |
981 | |
982 | if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) { |
983 | /* responder */ |
984 | if (!ord_size && (ctrl_ord & IETF_RDMA0_READ)) |
985 | cm_node->ird_size = 1; |
986 | if (cm_node->ord_size > ird_size) |
987 | cm_node->ord_size = ird_size; |
988 | } else { |
989 | /* initiator */ |
990 | if (!ird_size && (ctrl_ord & IETF_RDMA0_READ)) |
991 | /* Remote peer doesn't support RDMA0_READ */ |
992 | return -EOPNOTSUPP; |
993 | |
994 | if (cm_node->ord_size > ird_size) |
995 | cm_node->ord_size = ird_size; |
996 | |
997 | if (cm_node->ird_size < ord_size) |
998 | /* no resources available */ |
999 | return -EINVAL; |
1000 | } |
1001 | |
1002 | negotiate_done: |
1003 | if (ctrl_ord & IETF_RDMA0_READ) |
1004 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; |
1005 | else if (ctrl_ord & IETF_RDMA0_WRITE) |
1006 | cm_node->send_rdma0_op = SEND_RDMA_WRITE_ZERO; |
1007 | else |
1008 | /* Not supported RDMA0 operation */ |
1009 | return -EOPNOTSUPP; |
1010 | |
1011 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1012 | "CM: MPAV2 Negotiated ORD: %d, IRD: %d\n" , |
1013 | cm_node->ord_size, cm_node->ird_size); |
1014 | trace_irdma_negotiate_mpa_v2(cm_node); |
1015 | return 0; |
1016 | } |
1017 | |
1018 | /** |
1019 | * irdma_parse_mpa - process an IETF MPA frame |
1020 | * @cm_node: connection's node |
1021 | * @buf: Data pointer |
1022 | * @type: to return accept or reject |
1023 | * @len: Len of mpa buffer |
1024 | */ |
1025 | static int irdma_parse_mpa(struct irdma_cm_node *cm_node, u8 *buf, u32 *type, |
1026 | u32 len) |
1027 | { |
1028 | struct ietf_mpa_v1 *mpa_frame; |
1029 | int mpa_hdr_len, priv_data_len, ret; |
1030 | |
1031 | *type = IRDMA_MPA_REQUEST_ACCEPT; |
1032 | |
1033 | if (len < sizeof(struct ietf_mpa_v1)) { |
1034 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1035 | "CM: ietf buffer small (%x)\n" , len); |
1036 | return -EINVAL; |
1037 | } |
1038 | |
1039 | mpa_frame = (struct ietf_mpa_v1 *)buf; |
1040 | mpa_hdr_len = sizeof(struct ietf_mpa_v1); |
1041 | priv_data_len = ntohs(mpa_frame->priv_data_len); |
1042 | |
1043 | if (priv_data_len > IETF_MAX_PRIV_DATA_LEN) { |
1044 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1045 | "CM: private_data too big %d\n" , priv_data_len); |
1046 | return -EOVERFLOW; |
1047 | } |
1048 | |
1049 | if (mpa_frame->rev != IETF_MPA_V1 && mpa_frame->rev != IETF_MPA_V2) { |
1050 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1051 | "CM: unsupported mpa rev = %d\n" , mpa_frame->rev); |
1052 | return -EINVAL; |
1053 | } |
1054 | |
1055 | if (mpa_frame->rev > cm_node->mpa_frame_rev) { |
1056 | ibdev_dbg(&cm_node->iwdev->ibdev, "CM: rev %d\n" , |
1057 | mpa_frame->rev); |
1058 | return -EINVAL; |
1059 | } |
1060 | |
1061 | cm_node->mpa_frame_rev = mpa_frame->rev; |
1062 | if (cm_node->state != IRDMA_CM_STATE_MPAREQ_SENT) { |
1063 | if (memcmp(p: mpa_frame->key, IEFT_MPA_KEY_REQ, |
1064 | IETF_MPA_KEY_SIZE)) { |
1065 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1066 | "CM: Unexpected MPA Key received\n" ); |
1067 | return -EINVAL; |
1068 | } |
1069 | } else { |
1070 | if (memcmp(p: mpa_frame->key, IEFT_MPA_KEY_REP, |
1071 | IETF_MPA_KEY_SIZE)) { |
1072 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1073 | "CM: Unexpected MPA Key received\n" ); |
1074 | return -EINVAL; |
1075 | } |
1076 | } |
1077 | |
1078 | if (priv_data_len + mpa_hdr_len > len) { |
1079 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1080 | "CM: ietf buffer len(%x + %x != %x)\n" , |
1081 | priv_data_len, mpa_hdr_len, len); |
1082 | return -EOVERFLOW; |
1083 | } |
1084 | |
1085 | if (len > IRDMA_MAX_CM_BUF) { |
1086 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1087 | "CM: ietf buffer large len = %d\n" , len); |
1088 | return -EOVERFLOW; |
1089 | } |
1090 | |
1091 | switch (mpa_frame->rev) { |
1092 | case IETF_MPA_V2: |
1093 | mpa_hdr_len += IETF_RTR_MSG_SIZE; |
1094 | ret = irdma_negotiate_mpa_v2_ird_ord(cm_node, buf); |
1095 | if (ret) |
1096 | return ret; |
1097 | break; |
1098 | case IETF_MPA_V1: |
1099 | default: |
1100 | break; |
1101 | } |
1102 | |
1103 | memcpy(cm_node->pdata_buf, buf + mpa_hdr_len, priv_data_len); |
1104 | cm_node->pdata.size = priv_data_len; |
1105 | |
1106 | if (mpa_frame->flags & IETF_MPA_FLAGS_REJECT) |
1107 | *type = IRDMA_MPA_REQUEST_REJECT; |
1108 | |
1109 | if (mpa_frame->flags & IETF_MPA_FLAGS_MARKERS) |
1110 | cm_node->snd_mark_en = true; |
1111 | |
1112 | return 0; |
1113 | } |
1114 | |
1115 | /** |
1116 | * irdma_schedule_cm_timer |
1117 | * @cm_node: connection's node |
1118 | * @sqbuf: buffer to send |
1119 | * @type: if it is send or close |
1120 | * @send_retrans: if rexmits to be done |
1121 | * @close_when_complete: is cm_node to be removed |
1122 | * |
1123 | * note - cm_node needs to be protected before calling this. Encase in: |
1124 | * irdma_rem_ref_cm_node(cm_core, cm_node); |
1125 | * irdma_schedule_cm_timer(...) |
1126 | * refcount_inc(&cm_node->refcnt); |
1127 | */ |
1128 | int irdma_schedule_cm_timer(struct irdma_cm_node *cm_node, |
1129 | struct irdma_puda_buf *sqbuf, |
1130 | enum irdma_timer_type type, int send_retrans, |
1131 | int close_when_complete) |
1132 | { |
1133 | struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi; |
1134 | struct irdma_cm_core *cm_core = cm_node->cm_core; |
1135 | struct irdma_timer_entry *new_send; |
1136 | u32 was_timer_set; |
1137 | unsigned long flags; |
1138 | |
1139 | new_send = kzalloc(size: sizeof(*new_send), GFP_ATOMIC); |
1140 | if (!new_send) { |
1141 | if (type != IRDMA_TIMER_TYPE_CLOSE) |
1142 | irdma_free_sqbuf(vsi, bufp: sqbuf); |
1143 | return -ENOMEM; |
1144 | } |
1145 | |
1146 | new_send->retrycount = IRDMA_DEFAULT_RETRYS; |
1147 | new_send->retranscount = IRDMA_DEFAULT_RETRANS; |
1148 | new_send->sqbuf = sqbuf; |
1149 | new_send->timetosend = jiffies; |
1150 | new_send->type = type; |
1151 | new_send->send_retrans = send_retrans; |
1152 | new_send->close_when_complete = close_when_complete; |
1153 | |
1154 | if (type == IRDMA_TIMER_TYPE_CLOSE) { |
1155 | new_send->timetosend += (HZ / 10); |
1156 | if (cm_node->close_entry) { |
1157 | kfree(objp: new_send); |
1158 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1159 | "CM: already close entry\n" ); |
1160 | return -EINVAL; |
1161 | } |
1162 | |
1163 | cm_node->close_entry = new_send; |
1164 | } else { /* type == IRDMA_TIMER_TYPE_SEND */ |
1165 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
1166 | cm_node->send_entry = new_send; |
1167 | refcount_inc(r: &cm_node->refcnt); |
1168 | spin_unlock_irqrestore(lock: &cm_node->retrans_list_lock, flags); |
1169 | new_send->timetosend = jiffies + IRDMA_RETRY_TIMEOUT; |
1170 | |
1171 | refcount_inc(r: &sqbuf->refcount); |
1172 | irdma_puda_send_buf(rsrc: vsi->ilq, buf: sqbuf); |
1173 | if (!send_retrans) { |
1174 | irdma_cleanup_retrans_entry(cm_node); |
1175 | if (close_when_complete) |
1176 | irdma_rem_ref_cm_node(cm_node); |
1177 | return 0; |
1178 | } |
1179 | } |
1180 | |
1181 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
1182 | was_timer_set = timer_pending(timer: &cm_core->tcp_timer); |
1183 | |
1184 | if (!was_timer_set) { |
1185 | cm_core->tcp_timer.expires = new_send->timetosend; |
1186 | add_timer(timer: &cm_core->tcp_timer); |
1187 | } |
1188 | spin_unlock_irqrestore(lock: &cm_core->ht_lock, flags); |
1189 | |
1190 | return 0; |
1191 | } |
1192 | |
1193 | /** |
1194 | * irdma_retrans_expired - Could not rexmit the packet |
1195 | * @cm_node: connection's node |
1196 | */ |
1197 | static void irdma_retrans_expired(struct irdma_cm_node *cm_node) |
1198 | { |
1199 | enum irdma_cm_node_state state = cm_node->state; |
1200 | |
1201 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
1202 | switch (state) { |
1203 | case IRDMA_CM_STATE_SYN_RCVD: |
1204 | case IRDMA_CM_STATE_CLOSING: |
1205 | irdma_rem_ref_cm_node(cm_node); |
1206 | break; |
1207 | case IRDMA_CM_STATE_FIN_WAIT1: |
1208 | case IRDMA_CM_STATE_LAST_ACK: |
1209 | irdma_send_reset(cm_node); |
1210 | break; |
1211 | default: |
1212 | refcount_inc(r: &cm_node->refcnt); |
1213 | irdma_send_reset(cm_node); |
1214 | irdma_create_event(cm_node, type: IRDMA_CM_EVENT_ABORTED); |
1215 | break; |
1216 | } |
1217 | } |
1218 | |
1219 | /** |
1220 | * irdma_handle_close_entry - for handling retry/timeouts |
1221 | * @cm_node: connection's node |
1222 | * @rem_node: flag for remove cm_node |
1223 | */ |
1224 | static void irdma_handle_close_entry(struct irdma_cm_node *cm_node, |
1225 | u32 rem_node) |
1226 | { |
1227 | struct irdma_timer_entry *close_entry = cm_node->close_entry; |
1228 | struct irdma_qp *iwqp; |
1229 | unsigned long flags; |
1230 | |
1231 | if (!close_entry) |
1232 | return; |
1233 | iwqp = (struct irdma_qp *)close_entry->sqbuf; |
1234 | if (iwqp) { |
1235 | spin_lock_irqsave(&iwqp->lock, flags); |
1236 | if (iwqp->cm_id) { |
1237 | iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED; |
1238 | iwqp->hw_iwarp_state = IRDMA_QP_STATE_ERROR; |
1239 | iwqp->last_aeq = IRDMA_AE_RESET_SENT; |
1240 | iwqp->ibqp_state = IB_QPS_ERR; |
1241 | spin_unlock_irqrestore(lock: &iwqp->lock, flags); |
1242 | irdma_cm_disconn(qp: iwqp); |
1243 | } else { |
1244 | spin_unlock_irqrestore(lock: &iwqp->lock, flags); |
1245 | } |
1246 | } else if (rem_node) { |
1247 | /* TIME_WAIT state */ |
1248 | irdma_rem_ref_cm_node(cm_node); |
1249 | } |
1250 | |
1251 | kfree(objp: close_entry); |
1252 | cm_node->close_entry = NULL; |
1253 | } |
1254 | |
1255 | /** |
1256 | * irdma_cm_timer_tick - system's timer expired callback |
1257 | * @t: Pointer to timer_list |
1258 | */ |
1259 | static void irdma_cm_timer_tick(struct timer_list *t) |
1260 | { |
1261 | unsigned long nexttimeout = jiffies + IRDMA_LONG_TIME; |
1262 | struct irdma_cm_node *cm_node; |
1263 | struct irdma_timer_entry *send_entry, *close_entry; |
1264 | struct list_head *list_core_temp; |
1265 | struct list_head *list_node; |
1266 | struct irdma_cm_core *cm_core = from_timer(cm_core, t, tcp_timer); |
1267 | struct irdma_sc_vsi *vsi; |
1268 | u32 settimer = 0; |
1269 | unsigned long timetosend; |
1270 | unsigned long flags; |
1271 | struct list_head timer_list; |
1272 | |
1273 | INIT_LIST_HEAD(list: &timer_list); |
1274 | |
1275 | rcu_read_lock(); |
1276 | irdma_timer_list_prep(cm_core, timer_list: &timer_list); |
1277 | rcu_read_unlock(); |
1278 | |
1279 | list_for_each_safe (list_node, list_core_temp, &timer_list) { |
1280 | cm_node = container_of(list_node, struct irdma_cm_node, |
1281 | timer_entry); |
1282 | close_entry = cm_node->close_entry; |
1283 | |
1284 | if (close_entry) { |
1285 | if (time_after(close_entry->timetosend, jiffies)) { |
1286 | if (nexttimeout > close_entry->timetosend || |
1287 | !settimer) { |
1288 | nexttimeout = close_entry->timetosend; |
1289 | settimer = 1; |
1290 | } |
1291 | } else { |
1292 | irdma_handle_close_entry(cm_node, rem_node: 1); |
1293 | } |
1294 | } |
1295 | |
1296 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
1297 | |
1298 | send_entry = cm_node->send_entry; |
1299 | if (!send_entry) |
1300 | goto done; |
1301 | if (time_after(send_entry->timetosend, jiffies)) { |
1302 | if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) { |
1303 | if (nexttimeout > send_entry->timetosend || |
1304 | !settimer) { |
1305 | nexttimeout = send_entry->timetosend; |
1306 | settimer = 1; |
1307 | } |
1308 | } else { |
1309 | irdma_free_retrans_entry(cm_node); |
1310 | } |
1311 | goto done; |
1312 | } |
1313 | |
1314 | if (cm_node->state == IRDMA_CM_STATE_OFFLOADED || |
1315 | cm_node->state == IRDMA_CM_STATE_CLOSED) { |
1316 | irdma_free_retrans_entry(cm_node); |
1317 | goto done; |
1318 | } |
1319 | |
1320 | if (!send_entry->retranscount || !send_entry->retrycount) { |
1321 | irdma_free_retrans_entry(cm_node); |
1322 | |
1323 | spin_unlock_irqrestore(lock: &cm_node->retrans_list_lock, |
1324 | flags); |
1325 | irdma_retrans_expired(cm_node); |
1326 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
1327 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
1328 | goto done; |
1329 | } |
1330 | spin_unlock_irqrestore(lock: &cm_node->retrans_list_lock, flags); |
1331 | |
1332 | vsi = &cm_node->iwdev->vsi; |
1333 | if (!cm_node->ack_rcvd) { |
1334 | refcount_inc(r: &send_entry->sqbuf->refcount); |
1335 | irdma_puda_send_buf(rsrc: vsi->ilq, buf: send_entry->sqbuf); |
1336 | cm_node->cm_core->stats_pkt_retrans++; |
1337 | } |
1338 | |
1339 | spin_lock_irqsave(&cm_node->retrans_list_lock, flags); |
1340 | if (send_entry->send_retrans) { |
1341 | send_entry->retranscount--; |
1342 | timetosend = (IRDMA_RETRY_TIMEOUT << |
1343 | (IRDMA_DEFAULT_RETRANS - |
1344 | send_entry->retranscount)); |
1345 | |
1346 | send_entry->timetosend = jiffies + |
1347 | min(timetosend, IRDMA_MAX_TIMEOUT); |
1348 | if (nexttimeout > send_entry->timetosend || !settimer) { |
1349 | nexttimeout = send_entry->timetosend; |
1350 | settimer = 1; |
1351 | } |
1352 | } else { |
1353 | int close_when_complete; |
1354 | |
1355 | close_when_complete = send_entry->close_when_complete; |
1356 | irdma_free_retrans_entry(cm_node); |
1357 | if (close_when_complete) |
1358 | irdma_rem_ref_cm_node(cm_node); |
1359 | } |
1360 | done: |
1361 | spin_unlock_irqrestore(lock: &cm_node->retrans_list_lock, flags); |
1362 | irdma_rem_ref_cm_node(cm_node); |
1363 | } |
1364 | |
1365 | if (settimer) { |
1366 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
1367 | if (!timer_pending(timer: &cm_core->tcp_timer)) { |
1368 | cm_core->tcp_timer.expires = nexttimeout; |
1369 | add_timer(timer: &cm_core->tcp_timer); |
1370 | } |
1371 | spin_unlock_irqrestore(lock: &cm_core->ht_lock, flags); |
1372 | } |
1373 | } |
1374 | |
1375 | /** |
1376 | * irdma_send_syn - send SYN packet |
1377 | * @cm_node: connection's node |
1378 | * @sendack: flag to set ACK bit or not |
1379 | */ |
1380 | int irdma_send_syn(struct irdma_cm_node *cm_node, u32 sendack) |
1381 | { |
1382 | struct irdma_puda_buf *sqbuf; |
1383 | int flags = SET_SYN; |
1384 | char optionsbuf[sizeof(struct option_mss) + |
1385 | sizeof(struct option_windowscale) + |
1386 | sizeof(struct option_base) + TCP_OPTIONS_PADDING]; |
1387 | struct irdma_kmem_info opts; |
1388 | int optionssize = 0; |
1389 | /* Sending MSS option */ |
1390 | union all_known_options *options; |
1391 | |
1392 | opts.addr = optionsbuf; |
1393 | if (!cm_node) |
1394 | return -EINVAL; |
1395 | |
1396 | options = (union all_known_options *)&optionsbuf[optionssize]; |
1397 | options->mss.optionnum = OPTION_NUM_MSS; |
1398 | options->mss.len = sizeof(struct option_mss); |
1399 | options->mss.mss = htons(cm_node->tcp_cntxt.mss); |
1400 | optionssize += sizeof(struct option_mss); |
1401 | |
1402 | options = (union all_known_options *)&optionsbuf[optionssize]; |
1403 | options->windowscale.optionnum = OPTION_NUM_WINDOW_SCALE; |
1404 | options->windowscale.len = sizeof(struct option_windowscale); |
1405 | options->windowscale.shiftcount = cm_node->tcp_cntxt.rcv_wscale; |
1406 | optionssize += sizeof(struct option_windowscale); |
1407 | options = (union all_known_options *)&optionsbuf[optionssize]; |
1408 | options->eol = OPTION_NUM_EOL; |
1409 | optionssize += 1; |
1410 | |
1411 | if (sendack) |
1412 | flags |= SET_ACK; |
1413 | |
1414 | opts.size = optionssize; |
1415 | |
1416 | sqbuf = cm_node->cm_core->form_cm_frame(cm_node, &opts, NULL, NULL, |
1417 | flags); |
1418 | if (!sqbuf) |
1419 | return -ENOMEM; |
1420 | |
1421 | return irdma_schedule_cm_timer(cm_node, sqbuf, type: IRDMA_TIMER_TYPE_SEND, send_retrans: 1, |
1422 | close_when_complete: 0); |
1423 | } |
1424 | |
1425 | /** |
1426 | * irdma_send_ack - Send ACK packet |
1427 | * @cm_node: connection's node |
1428 | */ |
1429 | void irdma_send_ack(struct irdma_cm_node *cm_node) |
1430 | { |
1431 | struct irdma_puda_buf *sqbuf; |
1432 | struct irdma_sc_vsi *vsi = &cm_node->iwdev->vsi; |
1433 | |
1434 | sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL, |
1435 | SET_ACK); |
1436 | if (sqbuf) |
1437 | irdma_puda_send_buf(rsrc: vsi->ilq, buf: sqbuf); |
1438 | } |
1439 | |
1440 | /** |
1441 | * irdma_send_fin - Send FIN pkt |
1442 | * @cm_node: connection's node |
1443 | */ |
1444 | static int irdma_send_fin(struct irdma_cm_node *cm_node) |
1445 | { |
1446 | struct irdma_puda_buf *sqbuf; |
1447 | |
1448 | sqbuf = cm_node->cm_core->form_cm_frame(cm_node, NULL, NULL, NULL, |
1449 | SET_ACK | SET_FIN); |
1450 | if (!sqbuf) |
1451 | return -ENOMEM; |
1452 | |
1453 | return irdma_schedule_cm_timer(cm_node, sqbuf, type: IRDMA_TIMER_TYPE_SEND, send_retrans: 1, |
1454 | close_when_complete: 0); |
1455 | } |
1456 | |
1457 | /** |
1458 | * irdma_find_listener - find a cm node listening on this addr-port pair |
1459 | * @cm_core: cm's core |
1460 | * @dst_addr: listener ip addr |
1461 | * @ipv4: flag indicating IPv4 when true |
1462 | * @dst_port: listener tcp port num |
1463 | * @vlan_id: virtual LAN ID |
1464 | * @listener_state: state to match with listen node's |
1465 | */ |
1466 | static struct irdma_cm_listener * |
1467 | irdma_find_listener(struct irdma_cm_core *cm_core, u32 *dst_addr, bool ipv4, |
1468 | u16 dst_port, u16 vlan_id, |
1469 | enum irdma_cm_listener_state listener_state) |
1470 | { |
1471 | struct irdma_cm_listener *listen_node; |
1472 | static const u32 ip_zero[4] = { 0, 0, 0, 0 }; |
1473 | u32 listen_addr[4]; |
1474 | u16 listen_port; |
1475 | unsigned long flags; |
1476 | |
1477 | /* walk list and find cm_node associated with this session ID */ |
1478 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
1479 | list_for_each_entry (listen_node, &cm_core->listen_list, list) { |
1480 | memcpy(listen_addr, listen_node->loc_addr, sizeof(listen_addr)); |
1481 | listen_port = listen_node->loc_port; |
1482 | if (listen_node->ipv4 != ipv4 || listen_port != dst_port || |
1483 | !(listener_state & listen_node->listener_state)) |
1484 | continue; |
1485 | /* compare node pair, return node handle if a match */ |
1486 | if (!memcmp(p: listen_addr, q: ip_zero, size: sizeof(listen_addr)) || |
1487 | (!memcmp(p: listen_addr, q: dst_addr, size: sizeof(listen_addr)) && |
1488 | vlan_id == listen_node->vlan_id)) { |
1489 | refcount_inc(r: &listen_node->refcnt); |
1490 | spin_unlock_irqrestore(lock: &cm_core->listen_list_lock, |
1491 | flags); |
1492 | trace_irdma_find_listener(listener: listen_node); |
1493 | return listen_node; |
1494 | } |
1495 | } |
1496 | spin_unlock_irqrestore(lock: &cm_core->listen_list_lock, flags); |
1497 | |
1498 | return NULL; |
1499 | } |
1500 | |
1501 | /** |
1502 | * irdma_del_multiple_qhash - Remove qhash and child listens |
1503 | * @iwdev: iWarp device |
1504 | * @cm_info: CM info for parent listen node |
1505 | * @cm_parent_listen_node: The parent listen node |
1506 | */ |
1507 | static int irdma_del_multiple_qhash(struct irdma_device *iwdev, |
1508 | struct irdma_cm_info *cm_info, |
1509 | struct irdma_cm_listener *cm_parent_listen_node) |
1510 | { |
1511 | struct irdma_cm_listener *child_listen_node; |
1512 | struct list_head *pos, *tpos; |
1513 | unsigned long flags; |
1514 | int ret = -EINVAL; |
1515 | |
1516 | spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags); |
1517 | list_for_each_safe (pos, tpos, |
1518 | &cm_parent_listen_node->child_listen_list) { |
1519 | child_listen_node = list_entry(pos, struct irdma_cm_listener, |
1520 | child_listen_list); |
1521 | if (child_listen_node->ipv4) |
1522 | ibdev_dbg(&iwdev->ibdev, |
1523 | "CM: removing child listen for IP=%pI4, port=%d, vlan=%d\n" , |
1524 | child_listen_node->loc_addr, |
1525 | child_listen_node->loc_port, |
1526 | child_listen_node->vlan_id); |
1527 | else |
1528 | ibdev_dbg(&iwdev->ibdev, |
1529 | "CM: removing child listen for IP=%pI6, port=%d, vlan=%d\n" , |
1530 | child_listen_node->loc_addr, |
1531 | child_listen_node->loc_port, |
1532 | child_listen_node->vlan_id); |
1533 | trace_irdma_del_multiple_qhash(listener: child_listen_node); |
1534 | list_del(entry: pos); |
1535 | memcpy(cm_info->loc_addr, child_listen_node->loc_addr, |
1536 | sizeof(cm_info->loc_addr)); |
1537 | cm_info->vlan_id = child_listen_node->vlan_id; |
1538 | if (child_listen_node->qhash_set) { |
1539 | ret = irdma_manage_qhash(iwdev, cminfo: cm_info, |
1540 | etype: IRDMA_QHASH_TYPE_TCP_SYN, |
1541 | mtype: IRDMA_QHASH_MANAGE_TYPE_DELETE, |
1542 | NULL, wait: false); |
1543 | child_listen_node->qhash_set = false; |
1544 | } else { |
1545 | ret = 0; |
1546 | } |
1547 | ibdev_dbg(&iwdev->ibdev, |
1548 | "CM: Child listen node freed = %p\n" , |
1549 | child_listen_node); |
1550 | kfree(objp: child_listen_node); |
1551 | cm_parent_listen_node->cm_core->stats_listen_nodes_destroyed++; |
1552 | } |
1553 | spin_unlock_irqrestore(lock: &iwdev->cm_core.listen_list_lock, flags); |
1554 | |
1555 | return ret; |
1556 | } |
1557 | |
1558 | static u8 irdma_iw_get_vlan_prio(u32 *loc_addr, u8 prio, bool ipv4) |
1559 | { |
1560 | struct net_device *ndev = NULL; |
1561 | |
1562 | rcu_read_lock(); |
1563 | if (ipv4) { |
1564 | ndev = ip_dev_find(net: &init_net, htonl(loc_addr[0])); |
1565 | } else if (IS_ENABLED(CONFIG_IPV6)) { |
1566 | struct net_device *ip_dev; |
1567 | struct in6_addr laddr6; |
1568 | |
1569 | irdma_copy_ip_htonl(dst: laddr6.in6_u.u6_addr32, src: loc_addr); |
1570 | |
1571 | for_each_netdev_rcu (&init_net, ip_dev) { |
1572 | if (ipv6_chk_addr(net: &init_net, addr: &laddr6, dev: ip_dev, strict: 1)) { |
1573 | ndev = ip_dev; |
1574 | break; |
1575 | } |
1576 | } |
1577 | } |
1578 | |
1579 | if (!ndev) |
1580 | goto done; |
1581 | if (is_vlan_dev(dev: ndev)) |
1582 | prio = (vlan_dev_get_egress_qos_mask(dev: ndev, skprio: prio) & VLAN_PRIO_MASK) |
1583 | >> VLAN_PRIO_SHIFT; |
1584 | if (ipv4) |
1585 | dev_put(dev: ndev); |
1586 | |
1587 | done: |
1588 | rcu_read_unlock(); |
1589 | |
1590 | return prio; |
1591 | } |
1592 | |
1593 | /** |
1594 | * irdma_get_vlan_mac_ipv6 - Gets the vlan and mac |
1595 | * @addr: local IPv6 address |
1596 | * @vlan_id: vlan id for the given IPv6 address |
1597 | * @mac: mac address for the given IPv6 address |
1598 | * |
1599 | * Returns the vlan id and mac for an IPv6 address. |
1600 | */ |
1601 | void irdma_get_vlan_mac_ipv6(u32 *addr, u16 *vlan_id, u8 *mac) |
1602 | { |
1603 | struct net_device *ip_dev = NULL; |
1604 | struct in6_addr laddr6; |
1605 | |
1606 | if (!IS_ENABLED(CONFIG_IPV6)) |
1607 | return; |
1608 | |
1609 | irdma_copy_ip_htonl(dst: laddr6.in6_u.u6_addr32, src: addr); |
1610 | if (vlan_id) |
1611 | *vlan_id = 0xFFFF; /* Match rdma_vlan_dev_vlan_id() */ |
1612 | if (mac) |
1613 | eth_zero_addr(addr: mac); |
1614 | |
1615 | rcu_read_lock(); |
1616 | for_each_netdev_rcu (&init_net, ip_dev) { |
1617 | if (ipv6_chk_addr(net: &init_net, addr: &laddr6, dev: ip_dev, strict: 1)) { |
1618 | if (vlan_id) |
1619 | *vlan_id = rdma_vlan_dev_vlan_id(dev: ip_dev); |
1620 | if (ip_dev->dev_addr && mac) |
1621 | ether_addr_copy(dst: mac, src: ip_dev->dev_addr); |
1622 | break; |
1623 | } |
1624 | } |
1625 | rcu_read_unlock(); |
1626 | } |
1627 | |
1628 | /** |
1629 | * irdma_get_vlan_ipv4 - Returns the vlan_id for IPv4 address |
1630 | * @addr: local IPv4 address |
1631 | */ |
1632 | u16 irdma_get_vlan_ipv4(u32 *addr) |
1633 | { |
1634 | struct net_device *netdev; |
1635 | u16 vlan_id = 0xFFFF; |
1636 | |
1637 | netdev = ip_dev_find(net: &init_net, htonl(addr[0])); |
1638 | if (netdev) { |
1639 | vlan_id = rdma_vlan_dev_vlan_id(dev: netdev); |
1640 | dev_put(dev: netdev); |
1641 | } |
1642 | |
1643 | return vlan_id; |
1644 | } |
1645 | |
1646 | /** |
1647 | * irdma_add_mqh_6 - Adds multiple qhashes for IPv6 |
1648 | * @iwdev: iWarp device |
1649 | * @cm_info: CM info for parent listen node |
1650 | * @cm_parent_listen_node: The parent listen node |
1651 | * |
1652 | * Adds a qhash and a child listen node for every IPv6 address |
1653 | * on the adapter and adds the associated qhash filter |
1654 | */ |
1655 | static int irdma_add_mqh_6(struct irdma_device *iwdev, |
1656 | struct irdma_cm_info *cm_info, |
1657 | struct irdma_cm_listener *cm_parent_listen_node) |
1658 | { |
1659 | struct net_device *ip_dev; |
1660 | struct inet6_dev *idev; |
1661 | struct inet6_ifaddr *ifp, *tmp; |
1662 | struct irdma_cm_listener *child_listen_node; |
1663 | unsigned long flags; |
1664 | int ret = 0; |
1665 | |
1666 | rtnl_lock(); |
1667 | for_each_netdev(&init_net, ip_dev) { |
1668 | if (!(ip_dev->flags & IFF_UP)) |
1669 | continue; |
1670 | |
1671 | if (((rdma_vlan_dev_vlan_id(dev: ip_dev) >= VLAN_N_VID) || |
1672 | (rdma_vlan_dev_real_dev(dev: ip_dev) != iwdev->netdev)) && |
1673 | ip_dev != iwdev->netdev) |
1674 | continue; |
1675 | |
1676 | idev = __in6_dev_get(dev: ip_dev); |
1677 | if (!idev) { |
1678 | ibdev_dbg(&iwdev->ibdev, "CM: idev == NULL\n" ); |
1679 | break; |
1680 | } |
1681 | list_for_each_entry_safe (ifp, tmp, &idev->addr_list, if_list) { |
1682 | ibdev_dbg(&iwdev->ibdev, "CM: IP=%pI6, vlan_id=%d, MAC=%pM\n" , |
1683 | &ifp->addr, rdma_vlan_dev_vlan_id(ip_dev), |
1684 | ip_dev->dev_addr); |
1685 | child_listen_node = kzalloc(size: sizeof(*child_listen_node), GFP_KERNEL); |
1686 | ibdev_dbg(&iwdev->ibdev, "CM: Allocating child listener %p\n" , |
1687 | child_listen_node); |
1688 | if (!child_listen_node) { |
1689 | ibdev_dbg(&iwdev->ibdev, "CM: listener memory allocation\n" ); |
1690 | ret = -ENOMEM; |
1691 | goto exit; |
1692 | } |
1693 | |
1694 | cm_info->vlan_id = rdma_vlan_dev_vlan_id(dev: ip_dev); |
1695 | cm_parent_listen_node->vlan_id = cm_info->vlan_id; |
1696 | memcpy(child_listen_node, cm_parent_listen_node, |
1697 | sizeof(*child_listen_node)); |
1698 | irdma_copy_ip_ntohl(dst: child_listen_node->loc_addr, |
1699 | src: ifp->addr.in6_u.u6_addr32); |
1700 | memcpy(cm_info->loc_addr, child_listen_node->loc_addr, |
1701 | sizeof(cm_info->loc_addr)); |
1702 | if (!iwdev->vsi.dscp_mode) |
1703 | cm_info->user_pri = |
1704 | irdma_iw_get_vlan_prio(loc_addr: child_listen_node->loc_addr, |
1705 | prio: cm_info->user_pri, |
1706 | ipv4: false); |
1707 | |
1708 | ret = irdma_manage_qhash(iwdev, cminfo: cm_info, |
1709 | etype: IRDMA_QHASH_TYPE_TCP_SYN, |
1710 | mtype: IRDMA_QHASH_MANAGE_TYPE_ADD, |
1711 | NULL, wait: true); |
1712 | if (ret) { |
1713 | kfree(objp: child_listen_node); |
1714 | continue; |
1715 | } |
1716 | |
1717 | trace_irdma_add_mqh_6(iwdev, listener: child_listen_node, |
1718 | dev_addr: ip_dev->dev_addr); |
1719 | |
1720 | child_listen_node->qhash_set = true; |
1721 | spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, flags); |
1722 | list_add(new: &child_listen_node->child_listen_list, |
1723 | head: &cm_parent_listen_node->child_listen_list); |
1724 | spin_unlock_irqrestore(lock: &iwdev->cm_core.listen_list_lock, flags); |
1725 | cm_parent_listen_node->cm_core->stats_listen_nodes_created++; |
1726 | } |
1727 | } |
1728 | exit: |
1729 | rtnl_unlock(); |
1730 | |
1731 | return ret; |
1732 | } |
1733 | |
1734 | /** |
1735 | * irdma_add_mqh_4 - Adds multiple qhashes for IPv4 |
1736 | * @iwdev: iWarp device |
1737 | * @cm_info: CM info for parent listen node |
1738 | * @cm_parent_listen_node: The parent listen node |
1739 | * |
1740 | * Adds a qhash and a child listen node for every IPv4 address |
1741 | * on the adapter and adds the associated qhash filter |
1742 | */ |
1743 | static int irdma_add_mqh_4(struct irdma_device *iwdev, |
1744 | struct irdma_cm_info *cm_info, |
1745 | struct irdma_cm_listener *cm_parent_listen_node) |
1746 | { |
1747 | struct net_device *ip_dev; |
1748 | struct in_device *idev; |
1749 | struct irdma_cm_listener *child_listen_node; |
1750 | unsigned long flags; |
1751 | const struct in_ifaddr *ifa; |
1752 | int ret = 0; |
1753 | |
1754 | rtnl_lock(); |
1755 | for_each_netdev(&init_net, ip_dev) { |
1756 | if (!(ip_dev->flags & IFF_UP)) |
1757 | continue; |
1758 | |
1759 | if (((rdma_vlan_dev_vlan_id(dev: ip_dev) >= VLAN_N_VID) || |
1760 | (rdma_vlan_dev_real_dev(dev: ip_dev) != iwdev->netdev)) && |
1761 | ip_dev != iwdev->netdev) |
1762 | continue; |
1763 | |
1764 | idev = in_dev_get(dev: ip_dev); |
1765 | if (!idev) |
1766 | continue; |
1767 | |
1768 | in_dev_for_each_ifa_rtnl(ifa, idev) { |
1769 | ibdev_dbg(&iwdev->ibdev, |
1770 | "CM: Allocating child CM Listener forIP=%pI4, vlan_id=%d, MAC=%pM\n" , |
1771 | &ifa->ifa_address, rdma_vlan_dev_vlan_id(ip_dev), |
1772 | ip_dev->dev_addr); |
1773 | child_listen_node = kzalloc(size: sizeof(*child_listen_node), GFP_KERNEL); |
1774 | cm_parent_listen_node->cm_core->stats_listen_nodes_created++; |
1775 | ibdev_dbg(&iwdev->ibdev, "CM: Allocating child listener %p\n" , |
1776 | child_listen_node); |
1777 | if (!child_listen_node) { |
1778 | ibdev_dbg(&iwdev->ibdev, "CM: listener memory allocation\n" ); |
1779 | in_dev_put(idev); |
1780 | ret = -ENOMEM; |
1781 | goto exit; |
1782 | } |
1783 | |
1784 | cm_info->vlan_id = rdma_vlan_dev_vlan_id(dev: ip_dev); |
1785 | cm_parent_listen_node->vlan_id = cm_info->vlan_id; |
1786 | memcpy(child_listen_node, cm_parent_listen_node, |
1787 | sizeof(*child_listen_node)); |
1788 | child_listen_node->loc_addr[0] = |
1789 | ntohl(ifa->ifa_address); |
1790 | memcpy(cm_info->loc_addr, child_listen_node->loc_addr, |
1791 | sizeof(cm_info->loc_addr)); |
1792 | if (!iwdev->vsi.dscp_mode) |
1793 | cm_info->user_pri = |
1794 | irdma_iw_get_vlan_prio(loc_addr: child_listen_node->loc_addr, |
1795 | prio: cm_info->user_pri, |
1796 | ipv4: true); |
1797 | ret = irdma_manage_qhash(iwdev, cminfo: cm_info, |
1798 | etype: IRDMA_QHASH_TYPE_TCP_SYN, |
1799 | mtype: IRDMA_QHASH_MANAGE_TYPE_ADD, |
1800 | NULL, wait: true); |
1801 | if (ret) { |
1802 | kfree(objp: child_listen_node); |
1803 | cm_parent_listen_node->cm_core |
1804 | ->stats_listen_nodes_created--; |
1805 | continue; |
1806 | } |
1807 | |
1808 | trace_irdma_add_mqh_4(iwdev, listener: child_listen_node, |
1809 | dev_addr: ip_dev->dev_addr); |
1810 | |
1811 | child_listen_node->qhash_set = true; |
1812 | spin_lock_irqsave(&iwdev->cm_core.listen_list_lock, |
1813 | flags); |
1814 | list_add(new: &child_listen_node->child_listen_list, |
1815 | head: &cm_parent_listen_node->child_listen_list); |
1816 | spin_unlock_irqrestore(lock: &iwdev->cm_core.listen_list_lock, flags); |
1817 | } |
1818 | in_dev_put(idev); |
1819 | } |
1820 | exit: |
1821 | rtnl_unlock(); |
1822 | |
1823 | return ret; |
1824 | } |
1825 | |
1826 | /** |
1827 | * irdma_add_mqh - Adds multiple qhashes |
1828 | * @iwdev: iWarp device |
1829 | * @cm_info: CM info for parent listen node |
1830 | * @cm_listen_node: The parent listen node |
1831 | */ |
1832 | static int irdma_add_mqh(struct irdma_device *iwdev, |
1833 | struct irdma_cm_info *cm_info, |
1834 | struct irdma_cm_listener *cm_listen_node) |
1835 | { |
1836 | if (cm_info->ipv4) |
1837 | return irdma_add_mqh_4(iwdev, cm_info, cm_parent_listen_node: cm_listen_node); |
1838 | else |
1839 | return irdma_add_mqh_6(iwdev, cm_info, cm_parent_listen_node: cm_listen_node); |
1840 | } |
1841 | |
1842 | /** |
1843 | * irdma_reset_list_prep - add connection nodes slated for reset to list |
1844 | * @cm_core: cm's core |
1845 | * @listener: pointer to listener node |
1846 | * @reset_list: a list to which cm_node will be selected |
1847 | */ |
1848 | static void irdma_reset_list_prep(struct irdma_cm_core *cm_core, |
1849 | struct irdma_cm_listener *listener, |
1850 | struct list_head *reset_list) |
1851 | { |
1852 | struct irdma_cm_node *cm_node; |
1853 | int bkt; |
1854 | |
1855 | hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) { |
1856 | if (cm_node->listener == listener && |
1857 | !cm_node->accelerated && |
1858 | refcount_inc_not_zero(r: &cm_node->refcnt)) |
1859 | list_add(new: &cm_node->reset_entry, head: reset_list); |
1860 | } |
1861 | } |
1862 | |
1863 | /** |
1864 | * irdma_dec_refcnt_listen - delete listener and associated cm nodes |
1865 | * @cm_core: cm's core |
1866 | * @listener: pointer to listener node |
1867 | * @free_hanging_nodes: to free associated cm_nodes |
1868 | * @apbvt_del: flag to delete the apbvt |
1869 | */ |
1870 | static int irdma_dec_refcnt_listen(struct irdma_cm_core *cm_core, |
1871 | struct irdma_cm_listener *listener, |
1872 | int free_hanging_nodes, bool apbvt_del) |
1873 | { |
1874 | int err; |
1875 | struct list_head *list_pos; |
1876 | struct list_head *list_temp; |
1877 | struct irdma_cm_node *cm_node; |
1878 | struct list_head reset_list; |
1879 | struct irdma_cm_info nfo; |
1880 | enum irdma_cm_node_state old_state; |
1881 | unsigned long flags; |
1882 | |
1883 | trace_irdma_dec_refcnt_listen(listener, caller: __builtin_return_address(0)); |
1884 | /* free non-accelerated child nodes for this listener */ |
1885 | INIT_LIST_HEAD(list: &reset_list); |
1886 | if (free_hanging_nodes) { |
1887 | rcu_read_lock(); |
1888 | irdma_reset_list_prep(cm_core, listener, reset_list: &reset_list); |
1889 | rcu_read_unlock(); |
1890 | } |
1891 | |
1892 | list_for_each_safe (list_pos, list_temp, &reset_list) { |
1893 | cm_node = container_of(list_pos, struct irdma_cm_node, |
1894 | reset_entry); |
1895 | if (cm_node->state >= IRDMA_CM_STATE_FIN_WAIT1) { |
1896 | irdma_rem_ref_cm_node(cm_node); |
1897 | continue; |
1898 | } |
1899 | |
1900 | irdma_cleanup_retrans_entry(cm_node); |
1901 | err = irdma_send_reset(cm_node); |
1902 | if (err) { |
1903 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
1904 | ibdev_dbg(&cm_node->iwdev->ibdev, |
1905 | "CM: send reset failed\n" ); |
1906 | } else { |
1907 | old_state = cm_node->state; |
1908 | cm_node->state = IRDMA_CM_STATE_LISTENER_DESTROYED; |
1909 | if (old_state != IRDMA_CM_STATE_MPAREQ_RCVD) |
1910 | irdma_rem_ref_cm_node(cm_node); |
1911 | } |
1912 | } |
1913 | |
1914 | if (refcount_dec_and_test(r: &listener->refcnt)) { |
1915 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
1916 | list_del(entry: &listener->list); |
1917 | spin_unlock_irqrestore(lock: &cm_core->listen_list_lock, flags); |
1918 | |
1919 | if (apbvt_del) |
1920 | irdma_del_apbvt(iwdev: listener->iwdev, |
1921 | entry: listener->apbvt_entry); |
1922 | memcpy(nfo.loc_addr, listener->loc_addr, sizeof(nfo.loc_addr)); |
1923 | nfo.loc_port = listener->loc_port; |
1924 | nfo.ipv4 = listener->ipv4; |
1925 | nfo.vlan_id = listener->vlan_id; |
1926 | nfo.user_pri = listener->user_pri; |
1927 | nfo.qh_qpid = listener->iwdev->vsi.ilq->qp_id; |
1928 | |
1929 | if (!list_empty(head: &listener->child_listen_list)) { |
1930 | irdma_del_multiple_qhash(iwdev: listener->iwdev, cm_info: &nfo, |
1931 | cm_parent_listen_node: listener); |
1932 | } else { |
1933 | if (listener->qhash_set) |
1934 | irdma_manage_qhash(iwdev: listener->iwdev, |
1935 | cminfo: &nfo, |
1936 | etype: IRDMA_QHASH_TYPE_TCP_SYN, |
1937 | mtype: IRDMA_QHASH_MANAGE_TYPE_DELETE, |
1938 | NULL, wait: false); |
1939 | } |
1940 | |
1941 | cm_core->stats_listen_destroyed++; |
1942 | cm_core->stats_listen_nodes_destroyed++; |
1943 | ibdev_dbg(&listener->iwdev->ibdev, |
1944 | "CM: loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d apbvt_del=%d\n" , |
1945 | listener->loc_port, listener->loc_addr, listener, |
1946 | listener->cm_id, listener->qhash_set, |
1947 | listener->vlan_id, apbvt_del); |
1948 | kfree(objp: listener); |
1949 | listener = NULL; |
1950 | return 0; |
1951 | } |
1952 | |
1953 | return -EINVAL; |
1954 | } |
1955 | |
1956 | /** |
1957 | * irdma_cm_del_listen - delete a listener |
1958 | * @cm_core: cm's core |
1959 | * @listener: passive connection's listener |
1960 | * @apbvt_del: flag to delete apbvt |
1961 | */ |
1962 | static int irdma_cm_del_listen(struct irdma_cm_core *cm_core, |
1963 | struct irdma_cm_listener *listener, |
1964 | bool apbvt_del) |
1965 | { |
1966 | listener->listener_state = IRDMA_CM_LISTENER_PASSIVE_STATE; |
1967 | listener->cm_id = NULL; |
1968 | |
1969 | return irdma_dec_refcnt_listen(cm_core, listener, free_hanging_nodes: 1, apbvt_del); |
1970 | } |
1971 | |
1972 | /** |
1973 | * irdma_addr_resolve_neigh - resolve neighbor address |
1974 | * @iwdev: iwarp device structure |
1975 | * @src_ip: local ip address |
1976 | * @dst_ip: remote ip address |
1977 | * @arpindex: if there is an arp entry |
1978 | */ |
1979 | static int irdma_addr_resolve_neigh(struct irdma_device *iwdev, u32 src_ip, |
1980 | u32 dst_ip, int arpindex) |
1981 | { |
1982 | struct rtable *rt; |
1983 | struct neighbour *neigh; |
1984 | int rc = arpindex; |
1985 | __be32 dst_ipaddr = htonl(dst_ip); |
1986 | __be32 src_ipaddr = htonl(src_ip); |
1987 | |
1988 | rt = ip_route_output(net: &init_net, daddr: dst_ipaddr, saddr: src_ipaddr, tos: 0, oif: 0); |
1989 | if (IS_ERR(ptr: rt)) { |
1990 | ibdev_dbg(&iwdev->ibdev, "CM: ip_route_output fail\n" ); |
1991 | return -EINVAL; |
1992 | } |
1993 | |
1994 | neigh = dst_neigh_lookup(dst: &rt->dst, daddr: &dst_ipaddr); |
1995 | if (!neigh) |
1996 | goto exit; |
1997 | |
1998 | if (neigh->nud_state & NUD_VALID) |
1999 | rc = irdma_add_arp(rf: iwdev->rf, ip: &dst_ip, ipv4: true, mac: neigh->ha); |
2000 | else |
2001 | neigh_event_send(neigh, NULL); |
2002 | if (neigh) |
2003 | neigh_release(neigh); |
2004 | exit: |
2005 | ip_rt_put(rt); |
2006 | |
2007 | return rc; |
2008 | } |
2009 | |
2010 | /** |
2011 | * irdma_get_dst_ipv6 - get destination cache entry via ipv6 lookup |
2012 | * @src_addr: local ipv6 sock address |
2013 | * @dst_addr: destination ipv6 sock address |
2014 | */ |
2015 | static struct dst_entry *irdma_get_dst_ipv6(struct sockaddr_in6 *src_addr, |
2016 | struct sockaddr_in6 *dst_addr) |
2017 | { |
2018 | struct dst_entry *dst = NULL; |
2019 | |
2020 | if ((IS_ENABLED(CONFIG_IPV6))) { |
2021 | struct flowi6 fl6 = {}; |
2022 | |
2023 | fl6.daddr = dst_addr->sin6_addr; |
2024 | fl6.saddr = src_addr->sin6_addr; |
2025 | if (ipv6_addr_type(addr: &fl6.daddr) & IPV6_ADDR_LINKLOCAL) |
2026 | fl6.flowi6_oif = dst_addr->sin6_scope_id; |
2027 | |
2028 | dst = ip6_route_output(net: &init_net, NULL, fl6: &fl6); |
2029 | } |
2030 | |
2031 | return dst; |
2032 | } |
2033 | |
2034 | /** |
2035 | * irdma_addr_resolve_neigh_ipv6 - resolve neighbor ipv6 address |
2036 | * @iwdev: iwarp device structure |
2037 | * @src: local ip address |
2038 | * @dest: remote ip address |
2039 | * @arpindex: if there is an arp entry |
2040 | */ |
2041 | static int irdma_addr_resolve_neigh_ipv6(struct irdma_device *iwdev, u32 *src, |
2042 | u32 *dest, int arpindex) |
2043 | { |
2044 | struct neighbour *neigh; |
2045 | int rc = arpindex; |
2046 | struct dst_entry *dst; |
2047 | struct sockaddr_in6 dst_addr = {}; |
2048 | struct sockaddr_in6 src_addr = {}; |
2049 | |
2050 | dst_addr.sin6_family = AF_INET6; |
2051 | irdma_copy_ip_htonl(dst: dst_addr.sin6_addr.in6_u.u6_addr32, src: dest); |
2052 | src_addr.sin6_family = AF_INET6; |
2053 | irdma_copy_ip_htonl(dst: src_addr.sin6_addr.in6_u.u6_addr32, src); |
2054 | dst = irdma_get_dst_ipv6(src_addr: &src_addr, dst_addr: &dst_addr); |
2055 | if (!dst || dst->error) { |
2056 | if (dst) { |
2057 | dst_release(dst); |
2058 | ibdev_dbg(&iwdev->ibdev, |
2059 | "CM: ip6_route_output returned dst->error = %d\n" , |
2060 | dst->error); |
2061 | } |
2062 | return -EINVAL; |
2063 | } |
2064 | |
2065 | neigh = dst_neigh_lookup(dst, daddr: dst_addr.sin6_addr.in6_u.u6_addr32); |
2066 | if (!neigh) |
2067 | goto exit; |
2068 | |
2069 | ibdev_dbg(&iwdev->ibdev, "CM: dst_neigh_lookup MAC=%pM\n" , |
2070 | neigh->ha); |
2071 | |
2072 | trace_irdma_addr_resolve(iwdev, dev_addr: neigh->ha); |
2073 | |
2074 | if (neigh->nud_state & NUD_VALID) |
2075 | rc = irdma_add_arp(rf: iwdev->rf, ip: dest, ipv4: false, mac: neigh->ha); |
2076 | else |
2077 | neigh_event_send(neigh, NULL); |
2078 | if (neigh) |
2079 | neigh_release(neigh); |
2080 | exit: |
2081 | dst_release(dst); |
2082 | |
2083 | return rc; |
2084 | } |
2085 | |
2086 | /** |
2087 | * irdma_find_node - find a cm node that matches the reference cm node |
2088 | * @cm_core: cm's core |
2089 | * @rem_port: remote tcp port num |
2090 | * @rem_addr: remote ip addr |
2091 | * @loc_port: local tcp port num |
2092 | * @loc_addr: local ip addr |
2093 | * @vlan_id: local VLAN ID |
2094 | */ |
2095 | struct irdma_cm_node *irdma_find_node(struct irdma_cm_core *cm_core, |
2096 | u16 rem_port, u32 *rem_addr, u16 loc_port, |
2097 | u32 *loc_addr, u16 vlan_id) |
2098 | { |
2099 | struct irdma_cm_node *cm_node; |
2100 | u32 key = (rem_port << 16) | loc_port; |
2101 | |
2102 | rcu_read_lock(); |
2103 | hash_for_each_possible_rcu(cm_core->cm_hash_tbl, cm_node, list, key) { |
2104 | if (cm_node->vlan_id == vlan_id && |
2105 | cm_node->loc_port == loc_port && cm_node->rem_port == rem_port && |
2106 | !memcmp(p: cm_node->loc_addr, q: loc_addr, size: sizeof(cm_node->loc_addr)) && |
2107 | !memcmp(p: cm_node->rem_addr, q: rem_addr, size: sizeof(cm_node->rem_addr))) { |
2108 | if (!refcount_inc_not_zero(r: &cm_node->refcnt)) |
2109 | goto exit; |
2110 | rcu_read_unlock(); |
2111 | trace_irdma_find_node(cm_node, type: 0, NULL); |
2112 | return cm_node; |
2113 | } |
2114 | } |
2115 | |
2116 | exit: |
2117 | rcu_read_unlock(); |
2118 | |
2119 | /* no owner node */ |
2120 | return NULL; |
2121 | } |
2122 | |
2123 | /** |
2124 | * irdma_add_hte_node - add a cm node to the hash table |
2125 | * @cm_core: cm's core |
2126 | * @cm_node: connection's node |
2127 | */ |
2128 | static void irdma_add_hte_node(struct irdma_cm_core *cm_core, |
2129 | struct irdma_cm_node *cm_node) |
2130 | { |
2131 | unsigned long flags; |
2132 | u32 key = (cm_node->rem_port << 16) | cm_node->loc_port; |
2133 | |
2134 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
2135 | hash_add_rcu(cm_core->cm_hash_tbl, &cm_node->list, key); |
2136 | spin_unlock_irqrestore(lock: &cm_core->ht_lock, flags); |
2137 | } |
2138 | |
2139 | /** |
2140 | * irdma_ipv4_is_lpb - check if loopback |
2141 | * @loc_addr: local addr to compare |
2142 | * @rem_addr: remote address |
2143 | */ |
2144 | bool irdma_ipv4_is_lpb(u32 loc_addr, u32 rem_addr) |
2145 | { |
2146 | return ipv4_is_loopback(htonl(rem_addr)) || (loc_addr == rem_addr); |
2147 | } |
2148 | |
2149 | /** |
2150 | * irdma_ipv6_is_lpb - check if loopback |
2151 | * @loc_addr: local addr to compare |
2152 | * @rem_addr: remote address |
2153 | */ |
2154 | bool irdma_ipv6_is_lpb(u32 *loc_addr, u32 *rem_addr) |
2155 | { |
2156 | struct in6_addr raddr6; |
2157 | |
2158 | irdma_copy_ip_htonl(dst: raddr6.in6_u.u6_addr32, src: rem_addr); |
2159 | |
2160 | return !memcmp(p: loc_addr, q: rem_addr, size: 16) || ipv6_addr_loopback(a: &raddr6); |
2161 | } |
2162 | |
2163 | /** |
2164 | * irdma_cm_create_ah - create a cm address handle |
2165 | * @cm_node: The connection manager node to create AH for |
2166 | * @wait: Provides option to wait for ah creation or not |
2167 | */ |
2168 | static int irdma_cm_create_ah(struct irdma_cm_node *cm_node, bool wait) |
2169 | { |
2170 | struct irdma_ah_info ah_info = {}; |
2171 | struct irdma_device *iwdev = cm_node->iwdev; |
2172 | |
2173 | ether_addr_copy(dst: ah_info.mac_addr, src: iwdev->netdev->dev_addr); |
2174 | |
2175 | ah_info.hop_ttl = 0x40; |
2176 | ah_info.tc_tos = cm_node->tos; |
2177 | ah_info.vsi = &iwdev->vsi; |
2178 | |
2179 | if (cm_node->ipv4) { |
2180 | ah_info.ipv4_valid = true; |
2181 | ah_info.dest_ip_addr[0] = cm_node->rem_addr[0]; |
2182 | ah_info.src_ip_addr[0] = cm_node->loc_addr[0]; |
2183 | ah_info.do_lpbk = irdma_ipv4_is_lpb(loc_addr: ah_info.src_ip_addr[0], |
2184 | rem_addr: ah_info.dest_ip_addr[0]); |
2185 | } else { |
2186 | memcpy(ah_info.dest_ip_addr, cm_node->rem_addr, |
2187 | sizeof(ah_info.dest_ip_addr)); |
2188 | memcpy(ah_info.src_ip_addr, cm_node->loc_addr, |
2189 | sizeof(ah_info.src_ip_addr)); |
2190 | ah_info.do_lpbk = irdma_ipv6_is_lpb(loc_addr: ah_info.src_ip_addr, |
2191 | rem_addr: ah_info.dest_ip_addr); |
2192 | } |
2193 | |
2194 | ah_info.vlan_tag = cm_node->vlan_id; |
2195 | if (cm_node->vlan_id < VLAN_N_VID) { |
2196 | ah_info.insert_vlan_tag = 1; |
2197 | ah_info.vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT; |
2198 | } |
2199 | |
2200 | ah_info.dst_arpindex = |
2201 | irdma_arp_table(rf: iwdev->rf, ip_addr: ah_info.dest_ip_addr, |
2202 | ipv4: ah_info.ipv4_valid, NULL, IRDMA_ARP_RESOLVE); |
2203 | |
2204 | if (irdma_puda_create_ah(dev: &iwdev->rf->sc_dev, ah_info: &ah_info, wait, |
2205 | type: IRDMA_PUDA_RSRC_TYPE_ILQ, cb_param: cm_node, |
2206 | ah: &cm_node->ah)) |
2207 | return -ENOMEM; |
2208 | |
2209 | trace_irdma_create_ah(cm_node); |
2210 | return 0; |
2211 | } |
2212 | |
2213 | /** |
2214 | * irdma_cm_free_ah - free a cm address handle |
2215 | * @cm_node: The connection manager node to create AH for |
2216 | */ |
2217 | static void irdma_cm_free_ah(struct irdma_cm_node *cm_node) |
2218 | { |
2219 | struct irdma_device *iwdev = cm_node->iwdev; |
2220 | |
2221 | trace_irdma_cm_free_ah(cm_node); |
2222 | irdma_puda_free_ah(dev: &iwdev->rf->sc_dev, ah: cm_node->ah); |
2223 | cm_node->ah = NULL; |
2224 | } |
2225 | |
2226 | /** |
2227 | * irdma_make_cm_node - create a new instance of a cm node |
2228 | * @cm_core: cm's core |
2229 | * @iwdev: iwarp device structure |
2230 | * @cm_info: quad info for connection |
2231 | * @listener: passive connection's listener |
2232 | */ |
2233 | static struct irdma_cm_node * |
2234 | irdma_make_cm_node(struct irdma_cm_core *cm_core, struct irdma_device *iwdev, |
2235 | struct irdma_cm_info *cm_info, |
2236 | struct irdma_cm_listener *listener) |
2237 | { |
2238 | struct irdma_cm_node *cm_node; |
2239 | int oldarpindex; |
2240 | int arpindex; |
2241 | struct net_device *netdev = iwdev->netdev; |
2242 | |
2243 | /* create an hte and cm_node for this instance */ |
2244 | cm_node = kzalloc(size: sizeof(*cm_node), GFP_ATOMIC); |
2245 | if (!cm_node) |
2246 | return NULL; |
2247 | |
2248 | /* set our node specific transport info */ |
2249 | cm_node->ipv4 = cm_info->ipv4; |
2250 | cm_node->vlan_id = cm_info->vlan_id; |
2251 | if (cm_node->vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode) |
2252 | cm_node->vlan_id = 0; |
2253 | cm_node->tos = cm_info->tos; |
2254 | cm_node->user_pri = cm_info->user_pri; |
2255 | if (listener) { |
2256 | if (listener->tos != cm_info->tos) |
2257 | ibdev_warn(ibdev: &iwdev->ibdev, |
2258 | format: "application TOS[%d] and remote client TOS[%d] mismatch\n" , |
2259 | listener->tos, cm_info->tos); |
2260 | if (iwdev->vsi.dscp_mode) { |
2261 | cm_node->user_pri = listener->user_pri; |
2262 | } else { |
2263 | cm_node->tos = max(listener->tos, cm_info->tos); |
2264 | cm_node->user_pri = rt_tos2priority(tos: cm_node->tos); |
2265 | cm_node->user_pri = |
2266 | irdma_iw_get_vlan_prio(loc_addr: cm_info->loc_addr, |
2267 | prio: cm_node->user_pri, |
2268 | ipv4: cm_info->ipv4); |
2269 | } |
2270 | ibdev_dbg(&iwdev->ibdev, |
2271 | "DCB: listener: TOS:[%d] UP:[%d]\n" , cm_node->tos, |
2272 | cm_node->user_pri); |
2273 | trace_irdma_listener_tos(iwdev, tos: cm_node->tos, |
2274 | user_pri: cm_node->user_pri); |
2275 | } |
2276 | memcpy(cm_node->loc_addr, cm_info->loc_addr, sizeof(cm_node->loc_addr)); |
2277 | memcpy(cm_node->rem_addr, cm_info->rem_addr, sizeof(cm_node->rem_addr)); |
2278 | cm_node->loc_port = cm_info->loc_port; |
2279 | cm_node->rem_port = cm_info->rem_port; |
2280 | |
2281 | cm_node->mpa_frame_rev = IRDMA_CM_DEFAULT_MPA_VER; |
2282 | cm_node->send_rdma0_op = SEND_RDMA_READ_ZERO; |
2283 | cm_node->iwdev = iwdev; |
2284 | cm_node->dev = &iwdev->rf->sc_dev; |
2285 | |
2286 | cm_node->ird_size = cm_node->dev->hw_attrs.max_hw_ird; |
2287 | cm_node->ord_size = cm_node->dev->hw_attrs.max_hw_ord; |
2288 | |
2289 | cm_node->listener = listener; |
2290 | cm_node->cm_id = cm_info->cm_id; |
2291 | ether_addr_copy(dst: cm_node->loc_mac, src: netdev->dev_addr); |
2292 | spin_lock_init(&cm_node->retrans_list_lock); |
2293 | cm_node->ack_rcvd = false; |
2294 | |
2295 | init_completion(x: &cm_node->establish_comp); |
2296 | refcount_set(r: &cm_node->refcnt, n: 1); |
2297 | /* associate our parent CM core */ |
2298 | cm_node->cm_core = cm_core; |
2299 | cm_node->tcp_cntxt.loc_id = IRDMA_CM_DEFAULT_LOCAL_ID; |
2300 | cm_node->tcp_cntxt.rcv_wscale = iwdev->rcv_wscale; |
2301 | cm_node->tcp_cntxt.rcv_wnd = iwdev->rcv_wnd >> cm_node->tcp_cntxt.rcv_wscale; |
2302 | if (cm_node->ipv4) { |
2303 | cm_node->tcp_cntxt.loc_seq_num = secure_tcp_seq(htonl(cm_node->loc_addr[0]), |
2304 | htonl(cm_node->rem_addr[0]), |
2305 | htons(cm_node->loc_port), |
2306 | htons(cm_node->rem_port)); |
2307 | cm_node->tcp_cntxt.mss = iwdev->vsi.mtu - IRDMA_MTU_TO_MSS_IPV4; |
2308 | } else if (IS_ENABLED(CONFIG_IPV6)) { |
2309 | __be32 loc[4] = { |
2310 | htonl(cm_node->loc_addr[0]), htonl(cm_node->loc_addr[1]), |
2311 | htonl(cm_node->loc_addr[2]), htonl(cm_node->loc_addr[3]) |
2312 | }; |
2313 | __be32 rem[4] = { |
2314 | htonl(cm_node->rem_addr[0]), htonl(cm_node->rem_addr[1]), |
2315 | htonl(cm_node->rem_addr[2]), htonl(cm_node->rem_addr[3]) |
2316 | }; |
2317 | cm_node->tcp_cntxt.loc_seq_num = secure_tcpv6_seq(saddr: loc, daddr: rem, |
2318 | htons(cm_node->loc_port), |
2319 | htons(cm_node->rem_port)); |
2320 | cm_node->tcp_cntxt.mss = iwdev->vsi.mtu - IRDMA_MTU_TO_MSS_IPV6; |
2321 | } |
2322 | |
2323 | if ((cm_node->ipv4 && |
2324 | irdma_ipv4_is_lpb(loc_addr: cm_node->loc_addr[0], rem_addr: cm_node->rem_addr[0])) || |
2325 | (!cm_node->ipv4 && |
2326 | irdma_ipv6_is_lpb(loc_addr: cm_node->loc_addr, rem_addr: cm_node->rem_addr))) { |
2327 | cm_node->do_lpb = true; |
2328 | arpindex = irdma_arp_table(rf: iwdev->rf, ip_addr: cm_node->rem_addr, |
2329 | ipv4: cm_node->ipv4, NULL, |
2330 | IRDMA_ARP_RESOLVE); |
2331 | } else { |
2332 | oldarpindex = irdma_arp_table(rf: iwdev->rf, ip_addr: cm_node->rem_addr, |
2333 | ipv4: cm_node->ipv4, NULL, |
2334 | IRDMA_ARP_RESOLVE); |
2335 | if (cm_node->ipv4) |
2336 | arpindex = irdma_addr_resolve_neigh(iwdev, |
2337 | src_ip: cm_info->loc_addr[0], |
2338 | dst_ip: cm_info->rem_addr[0], |
2339 | arpindex: oldarpindex); |
2340 | else if (IS_ENABLED(CONFIG_IPV6)) |
2341 | arpindex = irdma_addr_resolve_neigh_ipv6(iwdev, |
2342 | src: cm_info->loc_addr, |
2343 | dest: cm_info->rem_addr, |
2344 | arpindex: oldarpindex); |
2345 | else |
2346 | arpindex = -EINVAL; |
2347 | } |
2348 | |
2349 | if (arpindex < 0) |
2350 | goto err; |
2351 | |
2352 | ether_addr_copy(dst: cm_node->rem_mac, |
2353 | src: iwdev->rf->arp_table[arpindex].mac_addr); |
2354 | irdma_add_hte_node(cm_core, cm_node); |
2355 | cm_core->stats_nodes_created++; |
2356 | return cm_node; |
2357 | |
2358 | err: |
2359 | kfree(objp: cm_node); |
2360 | |
2361 | return NULL; |
2362 | } |
2363 | |
2364 | static void irdma_destroy_connection(struct irdma_cm_node *cm_node) |
2365 | { |
2366 | struct irdma_cm_core *cm_core = cm_node->cm_core; |
2367 | struct irdma_qp *iwqp; |
2368 | struct irdma_cm_info nfo; |
2369 | |
2370 | /* if the node is destroyed before connection was accelerated */ |
2371 | if (!cm_node->accelerated && cm_node->accept_pend) { |
2372 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2373 | "CM: node destroyed before established\n" ); |
2374 | atomic_dec(v: &cm_node->listener->pend_accepts_cnt); |
2375 | } |
2376 | if (cm_node->close_entry) |
2377 | irdma_handle_close_entry(cm_node, rem_node: 0); |
2378 | if (cm_node->listener) { |
2379 | irdma_dec_refcnt_listen(cm_core, listener: cm_node->listener, free_hanging_nodes: 0, apbvt_del: true); |
2380 | } else { |
2381 | if (cm_node->apbvt_set) { |
2382 | irdma_del_apbvt(iwdev: cm_node->iwdev, entry: cm_node->apbvt_entry); |
2383 | cm_node->apbvt_set = 0; |
2384 | } |
2385 | irdma_get_addr_info(cm_node, cm_info: &nfo); |
2386 | if (cm_node->qhash_set) { |
2387 | nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id; |
2388 | irdma_manage_qhash(iwdev: cm_node->iwdev, cminfo: &nfo, |
2389 | etype: IRDMA_QHASH_TYPE_TCP_ESTABLISHED, |
2390 | mtype: IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL, |
2391 | wait: false); |
2392 | cm_node->qhash_set = 0; |
2393 | } |
2394 | } |
2395 | |
2396 | iwqp = cm_node->iwqp; |
2397 | if (iwqp) { |
2398 | cm_node->cm_id->rem_ref(cm_node->cm_id); |
2399 | cm_node->cm_id = NULL; |
2400 | iwqp->cm_id = NULL; |
2401 | irdma_qp_rem_ref(ibqp: &iwqp->ibqp); |
2402 | cm_node->iwqp = NULL; |
2403 | } else if (cm_node->qhash_set) { |
2404 | irdma_get_addr_info(cm_node, cm_info: &nfo); |
2405 | nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id; |
2406 | irdma_manage_qhash(iwdev: cm_node->iwdev, cminfo: &nfo, |
2407 | etype: IRDMA_QHASH_TYPE_TCP_ESTABLISHED, |
2408 | mtype: IRDMA_QHASH_MANAGE_TYPE_DELETE, NULL, wait: false); |
2409 | cm_node->qhash_set = 0; |
2410 | } |
2411 | |
2412 | cm_core->cm_free_ah(cm_node); |
2413 | } |
2414 | |
2415 | /** |
2416 | * irdma_rem_ref_cm_node - destroy an instance of a cm node |
2417 | * @cm_node: connection's node |
2418 | */ |
2419 | void irdma_rem_ref_cm_node(struct irdma_cm_node *cm_node) |
2420 | { |
2421 | struct irdma_cm_core *cm_core = cm_node->cm_core; |
2422 | unsigned long flags; |
2423 | |
2424 | trace_irdma_rem_ref_cm_node(cm_node, type: 0, caller: __builtin_return_address(0)); |
2425 | spin_lock_irqsave(&cm_core->ht_lock, flags); |
2426 | |
2427 | if (!refcount_dec_and_test(r: &cm_node->refcnt)) { |
2428 | spin_unlock_irqrestore(lock: &cm_core->ht_lock, flags); |
2429 | return; |
2430 | } |
2431 | if (cm_node->iwqp) { |
2432 | cm_node->iwqp->cm_node = NULL; |
2433 | cm_node->iwqp->cm_id = NULL; |
2434 | } |
2435 | hash_del_rcu(node: &cm_node->list); |
2436 | cm_node->cm_core->stats_nodes_destroyed++; |
2437 | |
2438 | spin_unlock_irqrestore(lock: &cm_core->ht_lock, flags); |
2439 | |
2440 | irdma_destroy_connection(cm_node); |
2441 | |
2442 | kfree_rcu(cm_node, rcu_head); |
2443 | } |
2444 | |
2445 | /** |
2446 | * irdma_handle_fin_pkt - FIN packet received |
2447 | * @cm_node: connection's node |
2448 | */ |
2449 | static void irdma_handle_fin_pkt(struct irdma_cm_node *cm_node) |
2450 | { |
2451 | switch (cm_node->state) { |
2452 | case IRDMA_CM_STATE_SYN_RCVD: |
2453 | case IRDMA_CM_STATE_SYN_SENT: |
2454 | case IRDMA_CM_STATE_ESTABLISHED: |
2455 | case IRDMA_CM_STATE_MPAREJ_RCVD: |
2456 | cm_node->tcp_cntxt.rcv_nxt++; |
2457 | irdma_cleanup_retrans_entry(cm_node); |
2458 | cm_node->state = IRDMA_CM_STATE_LAST_ACK; |
2459 | irdma_send_fin(cm_node); |
2460 | break; |
2461 | case IRDMA_CM_STATE_MPAREQ_SENT: |
2462 | irdma_create_event(cm_node, type: IRDMA_CM_EVENT_ABORTED); |
2463 | cm_node->tcp_cntxt.rcv_nxt++; |
2464 | irdma_cleanup_retrans_entry(cm_node); |
2465 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
2466 | refcount_inc(r: &cm_node->refcnt); |
2467 | irdma_send_reset(cm_node); |
2468 | break; |
2469 | case IRDMA_CM_STATE_FIN_WAIT1: |
2470 | cm_node->tcp_cntxt.rcv_nxt++; |
2471 | irdma_cleanup_retrans_entry(cm_node); |
2472 | cm_node->state = IRDMA_CM_STATE_CLOSING; |
2473 | irdma_send_ack(cm_node); |
2474 | /* |
2475 | * Wait for ACK as this is simultaneous close. |
2476 | * After we receive ACK, do not send anything. |
2477 | * Just rm the node. |
2478 | */ |
2479 | break; |
2480 | case IRDMA_CM_STATE_FIN_WAIT2: |
2481 | cm_node->tcp_cntxt.rcv_nxt++; |
2482 | irdma_cleanup_retrans_entry(cm_node); |
2483 | cm_node->state = IRDMA_CM_STATE_TIME_WAIT; |
2484 | irdma_send_ack(cm_node); |
2485 | irdma_schedule_cm_timer(cm_node, NULL, type: IRDMA_TIMER_TYPE_CLOSE, |
2486 | send_retrans: 1, close_when_complete: 0); |
2487 | break; |
2488 | case IRDMA_CM_STATE_TIME_WAIT: |
2489 | cm_node->tcp_cntxt.rcv_nxt++; |
2490 | irdma_cleanup_retrans_entry(cm_node); |
2491 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
2492 | irdma_rem_ref_cm_node(cm_node); |
2493 | break; |
2494 | case IRDMA_CM_STATE_OFFLOADED: |
2495 | default: |
2496 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2497 | "CM: bad state node state = %d\n" , cm_node->state); |
2498 | break; |
2499 | } |
2500 | } |
2501 | |
2502 | /** |
2503 | * irdma_handle_rst_pkt - process received RST packet |
2504 | * @cm_node: connection's node |
2505 | * @rbuf: receive buffer |
2506 | */ |
2507 | static void irdma_handle_rst_pkt(struct irdma_cm_node *cm_node, |
2508 | struct irdma_puda_buf *rbuf) |
2509 | { |
2510 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2511 | "CM: caller: %pS cm_node=%p state=%d rem_port=0x%04x loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4\n" , |
2512 | __builtin_return_address(0), cm_node, cm_node->state, |
2513 | cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr, |
2514 | cm_node->loc_addr); |
2515 | |
2516 | irdma_cleanup_retrans_entry(cm_node); |
2517 | switch (cm_node->state) { |
2518 | case IRDMA_CM_STATE_SYN_SENT: |
2519 | case IRDMA_CM_STATE_MPAREQ_SENT: |
2520 | switch (cm_node->mpa_frame_rev) { |
2521 | case IETF_MPA_V2: |
2522 | /* Drop down to MPA_V1*/ |
2523 | cm_node->mpa_frame_rev = IETF_MPA_V1; |
2524 | /* send a syn and goto syn sent state */ |
2525 | cm_node->state = IRDMA_CM_STATE_SYN_SENT; |
2526 | if (irdma_send_syn(cm_node, sendack: 0)) |
2527 | irdma_active_open_err(cm_node, reset: false); |
2528 | break; |
2529 | case IETF_MPA_V1: |
2530 | default: |
2531 | irdma_active_open_err(cm_node, reset: false); |
2532 | break; |
2533 | } |
2534 | break; |
2535 | case IRDMA_CM_STATE_MPAREQ_RCVD: |
2536 | atomic_inc(v: &cm_node->passive_state); |
2537 | break; |
2538 | case IRDMA_CM_STATE_ESTABLISHED: |
2539 | case IRDMA_CM_STATE_SYN_RCVD: |
2540 | case IRDMA_CM_STATE_LISTENING: |
2541 | irdma_passive_open_err(cm_node, reset: false); |
2542 | break; |
2543 | case IRDMA_CM_STATE_OFFLOADED: |
2544 | irdma_active_open_err(cm_node, reset: false); |
2545 | break; |
2546 | case IRDMA_CM_STATE_CLOSED: |
2547 | break; |
2548 | case IRDMA_CM_STATE_FIN_WAIT2: |
2549 | case IRDMA_CM_STATE_FIN_WAIT1: |
2550 | case IRDMA_CM_STATE_LAST_ACK: |
2551 | case IRDMA_CM_STATE_TIME_WAIT: |
2552 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
2553 | irdma_rem_ref_cm_node(cm_node); |
2554 | break; |
2555 | default: |
2556 | break; |
2557 | } |
2558 | } |
2559 | |
2560 | /** |
2561 | * irdma_handle_rcv_mpa - Process a recv'd mpa buffer |
2562 | * @cm_node: connection's node |
2563 | * @rbuf: receive buffer |
2564 | */ |
2565 | static void irdma_handle_rcv_mpa(struct irdma_cm_node *cm_node, |
2566 | struct irdma_puda_buf *rbuf) |
2567 | { |
2568 | int err; |
2569 | int datasize = rbuf->datalen; |
2570 | u8 *dataloc = rbuf->data; |
2571 | |
2572 | enum irdma_cm_event_type type = IRDMA_CM_EVENT_UNKNOWN; |
2573 | u32 res_type; |
2574 | |
2575 | err = irdma_parse_mpa(cm_node, buf: dataloc, type: &res_type, len: datasize); |
2576 | if (err) { |
2577 | if (cm_node->state == IRDMA_CM_STATE_MPAREQ_SENT) |
2578 | irdma_active_open_err(cm_node, reset: true); |
2579 | else |
2580 | irdma_passive_open_err(cm_node, reset: true); |
2581 | return; |
2582 | } |
2583 | |
2584 | switch (cm_node->state) { |
2585 | case IRDMA_CM_STATE_ESTABLISHED: |
2586 | if (res_type == IRDMA_MPA_REQUEST_REJECT) |
2587 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2588 | "CM: state for reject\n" ); |
2589 | cm_node->state = IRDMA_CM_STATE_MPAREQ_RCVD; |
2590 | type = IRDMA_CM_EVENT_MPA_REQ; |
2591 | irdma_send_ack(cm_node); /* ACK received MPA request */ |
2592 | atomic_set(v: &cm_node->passive_state, |
2593 | IRDMA_PASSIVE_STATE_INDICATED); |
2594 | break; |
2595 | case IRDMA_CM_STATE_MPAREQ_SENT: |
2596 | irdma_cleanup_retrans_entry(cm_node); |
2597 | if (res_type == IRDMA_MPA_REQUEST_REJECT) { |
2598 | type = IRDMA_CM_EVENT_MPA_REJECT; |
2599 | cm_node->state = IRDMA_CM_STATE_MPAREJ_RCVD; |
2600 | } else { |
2601 | type = IRDMA_CM_EVENT_CONNECTED; |
2602 | cm_node->state = IRDMA_CM_STATE_OFFLOADED; |
2603 | } |
2604 | irdma_send_ack(cm_node); |
2605 | break; |
2606 | default: |
2607 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2608 | "CM: wrong cm_node state =%d\n" , cm_node->state); |
2609 | break; |
2610 | } |
2611 | irdma_create_event(cm_node, type); |
2612 | } |
2613 | |
2614 | /** |
2615 | * irdma_check_syn - Check for error on received syn ack |
2616 | * @cm_node: connection's node |
2617 | * @tcph: pointer tcp header |
2618 | */ |
2619 | static int irdma_check_syn(struct irdma_cm_node *cm_node, struct tcphdr *tcph) |
2620 | { |
2621 | if (ntohl(tcph->ack_seq) != cm_node->tcp_cntxt.loc_seq_num) { |
2622 | irdma_active_open_err(cm_node, reset: true); |
2623 | return 1; |
2624 | } |
2625 | |
2626 | return 0; |
2627 | } |
2628 | |
2629 | /** |
2630 | * irdma_check_seq - check seq numbers if OK |
2631 | * @cm_node: connection's node |
2632 | * @tcph: pointer tcp header |
2633 | */ |
2634 | static int irdma_check_seq(struct irdma_cm_node *cm_node, struct tcphdr *tcph) |
2635 | { |
2636 | u32 seq; |
2637 | u32 ack_seq; |
2638 | u32 loc_seq_num = cm_node->tcp_cntxt.loc_seq_num; |
2639 | u32 rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; |
2640 | u32 rcv_wnd; |
2641 | int err = 0; |
2642 | |
2643 | seq = ntohl(tcph->seq); |
2644 | ack_seq = ntohl(tcph->ack_seq); |
2645 | rcv_wnd = cm_node->tcp_cntxt.rcv_wnd; |
2646 | if (ack_seq != loc_seq_num || |
2647 | !between(seq1: seq, seq2: rcv_nxt, seq3: (rcv_nxt + rcv_wnd))) |
2648 | err = -1; |
2649 | if (err) |
2650 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2651 | "CM: seq number err\n" ); |
2652 | |
2653 | return err; |
2654 | } |
2655 | |
2656 | void irdma_add_conn_est_qh(struct irdma_cm_node *cm_node) |
2657 | { |
2658 | struct irdma_cm_info nfo; |
2659 | |
2660 | irdma_get_addr_info(cm_node, cm_info: &nfo); |
2661 | nfo.qh_qpid = cm_node->iwdev->vsi.ilq->qp_id; |
2662 | irdma_manage_qhash(iwdev: cm_node->iwdev, cminfo: &nfo, |
2663 | etype: IRDMA_QHASH_TYPE_TCP_ESTABLISHED, |
2664 | mtype: IRDMA_QHASH_MANAGE_TYPE_ADD, |
2665 | cmnode: cm_node, wait: false); |
2666 | cm_node->qhash_set = true; |
2667 | } |
2668 | |
2669 | /** |
2670 | * irdma_handle_syn_pkt - is for Passive node |
2671 | * @cm_node: connection's node |
2672 | * @rbuf: receive buffer |
2673 | */ |
2674 | static void irdma_handle_syn_pkt(struct irdma_cm_node *cm_node, |
2675 | struct irdma_puda_buf *rbuf) |
2676 | { |
2677 | struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph; |
2678 | int err; |
2679 | u32 inc_sequence; |
2680 | int optionsize; |
2681 | |
2682 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
2683 | inc_sequence = ntohl(tcph->seq); |
2684 | |
2685 | switch (cm_node->state) { |
2686 | case IRDMA_CM_STATE_SYN_SENT: |
2687 | case IRDMA_CM_STATE_MPAREQ_SENT: |
2688 | /* Rcvd syn on active open connection */ |
2689 | irdma_active_open_err(cm_node, reset: 1); |
2690 | break; |
2691 | case IRDMA_CM_STATE_LISTENING: |
2692 | /* Passive OPEN */ |
2693 | if (atomic_read(v: &cm_node->listener->pend_accepts_cnt) > |
2694 | cm_node->listener->backlog) { |
2695 | cm_node->cm_core->stats_backlog_drops++; |
2696 | irdma_passive_open_err(cm_node, reset: false); |
2697 | break; |
2698 | } |
2699 | err = irdma_handle_tcp_options(cm_node, tcph, optionsize, passive: 1); |
2700 | if (err) { |
2701 | irdma_passive_open_err(cm_node, reset: false); |
2702 | /* drop pkt */ |
2703 | break; |
2704 | } |
2705 | err = cm_node->cm_core->cm_create_ah(cm_node, false); |
2706 | if (err) { |
2707 | irdma_passive_open_err(cm_node, reset: false); |
2708 | /* drop pkt */ |
2709 | break; |
2710 | } |
2711 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; |
2712 | cm_node->accept_pend = 1; |
2713 | atomic_inc(v: &cm_node->listener->pend_accepts_cnt); |
2714 | |
2715 | cm_node->state = IRDMA_CM_STATE_SYN_RCVD; |
2716 | break; |
2717 | case IRDMA_CM_STATE_CLOSED: |
2718 | irdma_cleanup_retrans_entry(cm_node); |
2719 | refcount_inc(r: &cm_node->refcnt); |
2720 | irdma_send_reset(cm_node); |
2721 | break; |
2722 | case IRDMA_CM_STATE_OFFLOADED: |
2723 | case IRDMA_CM_STATE_ESTABLISHED: |
2724 | case IRDMA_CM_STATE_FIN_WAIT1: |
2725 | case IRDMA_CM_STATE_FIN_WAIT2: |
2726 | case IRDMA_CM_STATE_MPAREQ_RCVD: |
2727 | case IRDMA_CM_STATE_LAST_ACK: |
2728 | case IRDMA_CM_STATE_CLOSING: |
2729 | case IRDMA_CM_STATE_UNKNOWN: |
2730 | default: |
2731 | break; |
2732 | } |
2733 | } |
2734 | |
2735 | /** |
2736 | * irdma_handle_synack_pkt - Process SYN+ACK packet (active side) |
2737 | * @cm_node: connection's node |
2738 | * @rbuf: receive buffer |
2739 | */ |
2740 | static void irdma_handle_synack_pkt(struct irdma_cm_node *cm_node, |
2741 | struct irdma_puda_buf *rbuf) |
2742 | { |
2743 | struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph; |
2744 | int err; |
2745 | u32 inc_sequence; |
2746 | int optionsize; |
2747 | |
2748 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
2749 | inc_sequence = ntohl(tcph->seq); |
2750 | switch (cm_node->state) { |
2751 | case IRDMA_CM_STATE_SYN_SENT: |
2752 | irdma_cleanup_retrans_entry(cm_node); |
2753 | /* active open */ |
2754 | if (irdma_check_syn(cm_node, tcph)) { |
2755 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2756 | "CM: check syn fail\n" ); |
2757 | return; |
2758 | } |
2759 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
2760 | /* setup options */ |
2761 | err = irdma_handle_tcp_options(cm_node, tcph, optionsize, passive: 0); |
2762 | if (err) { |
2763 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2764 | "CM: cm_node=%p tcp_options failed\n" , |
2765 | cm_node); |
2766 | break; |
2767 | } |
2768 | irdma_cleanup_retrans_entry(cm_node); |
2769 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + 1; |
2770 | irdma_send_ack(cm_node); /* ACK for the syn_ack */ |
2771 | err = irdma_send_mpa_request(cm_node); |
2772 | if (err) { |
2773 | ibdev_dbg(&cm_node->iwdev->ibdev, |
2774 | "CM: cm_node=%p irdma_send_mpa_request failed\n" , |
2775 | cm_node); |
2776 | break; |
2777 | } |
2778 | cm_node->state = IRDMA_CM_STATE_MPAREQ_SENT; |
2779 | break; |
2780 | case IRDMA_CM_STATE_MPAREQ_RCVD: |
2781 | irdma_passive_open_err(cm_node, reset: true); |
2782 | break; |
2783 | case IRDMA_CM_STATE_LISTENING: |
2784 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
2785 | irdma_cleanup_retrans_entry(cm_node); |
2786 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
2787 | irdma_send_reset(cm_node); |
2788 | break; |
2789 | case IRDMA_CM_STATE_CLOSED: |
2790 | cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq); |
2791 | irdma_cleanup_retrans_entry(cm_node); |
2792 | refcount_inc(r: &cm_node->refcnt); |
2793 | irdma_send_reset(cm_node); |
2794 | break; |
2795 | case IRDMA_CM_STATE_ESTABLISHED: |
2796 | case IRDMA_CM_STATE_FIN_WAIT1: |
2797 | case IRDMA_CM_STATE_FIN_WAIT2: |
2798 | case IRDMA_CM_STATE_LAST_ACK: |
2799 | case IRDMA_CM_STATE_OFFLOADED: |
2800 | case IRDMA_CM_STATE_CLOSING: |
2801 | case IRDMA_CM_STATE_UNKNOWN: |
2802 | case IRDMA_CM_STATE_MPAREQ_SENT: |
2803 | default: |
2804 | break; |
2805 | } |
2806 | } |
2807 | |
2808 | /** |
2809 | * irdma_handle_ack_pkt - process packet with ACK |
2810 | * @cm_node: connection's node |
2811 | * @rbuf: receive buffer |
2812 | */ |
2813 | static int irdma_handle_ack_pkt(struct irdma_cm_node *cm_node, |
2814 | struct irdma_puda_buf *rbuf) |
2815 | { |
2816 | struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph; |
2817 | u32 inc_sequence; |
2818 | int ret; |
2819 | int optionsize; |
2820 | u32 datasize = rbuf->datalen; |
2821 | |
2822 | optionsize = (tcph->doff << 2) - sizeof(struct tcphdr); |
2823 | |
2824 | if (irdma_check_seq(cm_node, tcph)) |
2825 | return -EINVAL; |
2826 | |
2827 | inc_sequence = ntohl(tcph->seq); |
2828 | switch (cm_node->state) { |
2829 | case IRDMA_CM_STATE_SYN_RCVD: |
2830 | irdma_cleanup_retrans_entry(cm_node); |
2831 | ret = irdma_handle_tcp_options(cm_node, tcph, optionsize, passive: 1); |
2832 | if (ret) |
2833 | return ret; |
2834 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
2835 | cm_node->state = IRDMA_CM_STATE_ESTABLISHED; |
2836 | if (datasize) { |
2837 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; |
2838 | irdma_handle_rcv_mpa(cm_node, rbuf); |
2839 | } |
2840 | break; |
2841 | case IRDMA_CM_STATE_ESTABLISHED: |
2842 | irdma_cleanup_retrans_entry(cm_node); |
2843 | if (datasize) { |
2844 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; |
2845 | irdma_handle_rcv_mpa(cm_node, rbuf); |
2846 | } |
2847 | break; |
2848 | case IRDMA_CM_STATE_MPAREQ_SENT: |
2849 | cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq); |
2850 | if (datasize) { |
2851 | cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize; |
2852 | cm_node->ack_rcvd = false; |
2853 | irdma_handle_rcv_mpa(cm_node, rbuf); |
2854 | } else { |
2855 | cm_node->ack_rcvd = true; |
2856 | } |
2857 | break; |
2858 | case IRDMA_CM_STATE_LISTENING: |
2859 | irdma_cleanup_retrans_entry(cm_node); |
2860 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
2861 | irdma_send_reset(cm_node); |
2862 | break; |
2863 | case IRDMA_CM_STATE_CLOSED: |
2864 | irdma_cleanup_retrans_entry(cm_node); |
2865 | refcount_inc(r: &cm_node->refcnt); |
2866 | irdma_send_reset(cm_node); |
2867 | break; |
2868 | case IRDMA_CM_STATE_LAST_ACK: |
2869 | case IRDMA_CM_STATE_CLOSING: |
2870 | irdma_cleanup_retrans_entry(cm_node); |
2871 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
2872 | irdma_rem_ref_cm_node(cm_node); |
2873 | break; |
2874 | case IRDMA_CM_STATE_FIN_WAIT1: |
2875 | irdma_cleanup_retrans_entry(cm_node); |
2876 | cm_node->state = IRDMA_CM_STATE_FIN_WAIT2; |
2877 | break; |
2878 | case IRDMA_CM_STATE_SYN_SENT: |
2879 | case IRDMA_CM_STATE_FIN_WAIT2: |
2880 | case IRDMA_CM_STATE_OFFLOADED: |
2881 | case IRDMA_CM_STATE_MPAREQ_RCVD: |
2882 | case IRDMA_CM_STATE_UNKNOWN: |
2883 | default: |
2884 | irdma_cleanup_retrans_entry(cm_node); |
2885 | break; |
2886 | } |
2887 | |
2888 | return 0; |
2889 | } |
2890 | |
2891 | /** |
2892 | * irdma_process_pkt - process cm packet |
2893 | * @cm_node: connection's node |
2894 | * @rbuf: receive buffer |
2895 | */ |
2896 | static void irdma_process_pkt(struct irdma_cm_node *cm_node, |
2897 | struct irdma_puda_buf *rbuf) |
2898 | { |
2899 | enum irdma_tcpip_pkt_type pkt_type = IRDMA_PKT_TYPE_UNKNOWN; |
2900 | struct tcphdr *tcph = (struct tcphdr *)rbuf->tcph; |
2901 | u32 fin_set = 0; |
2902 | int err; |
2903 | |
2904 | if (tcph->rst) { |
2905 | pkt_type = IRDMA_PKT_TYPE_RST; |
2906 | } else if (tcph->syn) { |
2907 | pkt_type = IRDMA_PKT_TYPE_SYN; |
2908 | if (tcph->ack) |
2909 | pkt_type = IRDMA_PKT_TYPE_SYNACK; |
2910 | } else if (tcph->ack) { |
2911 | pkt_type = IRDMA_PKT_TYPE_ACK; |
2912 | } |
2913 | if (tcph->fin) |
2914 | fin_set = 1; |
2915 | |
2916 | switch (pkt_type) { |
2917 | case IRDMA_PKT_TYPE_SYN: |
2918 | irdma_handle_syn_pkt(cm_node, rbuf); |
2919 | break; |
2920 | case IRDMA_PKT_TYPE_SYNACK: |
2921 | irdma_handle_synack_pkt(cm_node, rbuf); |
2922 | break; |
2923 | case IRDMA_PKT_TYPE_ACK: |
2924 | err = irdma_handle_ack_pkt(cm_node, rbuf); |
2925 | if (fin_set && !err) |
2926 | irdma_handle_fin_pkt(cm_node); |
2927 | break; |
2928 | case IRDMA_PKT_TYPE_RST: |
2929 | irdma_handle_rst_pkt(cm_node, rbuf); |
2930 | break; |
2931 | default: |
2932 | if (fin_set && |
2933 | (!irdma_check_seq(cm_node, tcph: (struct tcphdr *)rbuf->tcph))) |
2934 | irdma_handle_fin_pkt(cm_node); |
2935 | break; |
2936 | } |
2937 | } |
2938 | |
2939 | /** |
2940 | * irdma_make_listen_node - create a listen node with params |
2941 | * @cm_core: cm's core |
2942 | * @iwdev: iwarp device structure |
2943 | * @cm_info: quad info for connection |
2944 | */ |
2945 | static struct irdma_cm_listener * |
2946 | irdma_make_listen_node(struct irdma_cm_core *cm_core, |
2947 | struct irdma_device *iwdev, |
2948 | struct irdma_cm_info *cm_info) |
2949 | { |
2950 | struct irdma_cm_listener *listener; |
2951 | unsigned long flags; |
2952 | |
2953 | /* cannot have multiple matching listeners */ |
2954 | listener = |
2955 | irdma_find_listener(cm_core, dst_addr: cm_info->loc_addr, ipv4: cm_info->ipv4, |
2956 | dst_port: cm_info->loc_port, vlan_id: cm_info->vlan_id, |
2957 | listener_state: IRDMA_CM_LISTENER_EITHER_STATE); |
2958 | if (listener && |
2959 | listener->listener_state == IRDMA_CM_LISTENER_ACTIVE_STATE) { |
2960 | refcount_dec(r: &listener->refcnt); |
2961 | return NULL; |
2962 | } |
2963 | |
2964 | if (!listener) { |
2965 | /* create a CM listen node |
2966 | * 1/2 node to compare incoming traffic to |
2967 | */ |
2968 | listener = kzalloc(size: sizeof(*listener), GFP_KERNEL); |
2969 | if (!listener) |
2970 | return NULL; |
2971 | cm_core->stats_listen_nodes_created++; |
2972 | memcpy(listener->loc_addr, cm_info->loc_addr, |
2973 | sizeof(listener->loc_addr)); |
2974 | listener->loc_port = cm_info->loc_port; |
2975 | |
2976 | INIT_LIST_HEAD(list: &listener->child_listen_list); |
2977 | |
2978 | refcount_set(r: &listener->refcnt, n: 1); |
2979 | } else { |
2980 | listener->reused_node = 1; |
2981 | } |
2982 | |
2983 | listener->cm_id = cm_info->cm_id; |
2984 | listener->ipv4 = cm_info->ipv4; |
2985 | listener->vlan_id = cm_info->vlan_id; |
2986 | atomic_set(v: &listener->pend_accepts_cnt, i: 0); |
2987 | listener->cm_core = cm_core; |
2988 | listener->iwdev = iwdev; |
2989 | |
2990 | listener->backlog = cm_info->backlog; |
2991 | listener->listener_state = IRDMA_CM_LISTENER_ACTIVE_STATE; |
2992 | |
2993 | if (!listener->reused_node) { |
2994 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
2995 | list_add(new: &listener->list, head: &cm_core->listen_list); |
2996 | spin_unlock_irqrestore(lock: &cm_core->listen_list_lock, flags); |
2997 | } |
2998 | |
2999 | return listener; |
3000 | } |
3001 | |
3002 | /** |
3003 | * irdma_create_cm_node - make a connection node with params |
3004 | * @cm_core: cm's core |
3005 | * @iwdev: iwarp device structure |
3006 | * @conn_param: connection parameters |
3007 | * @cm_info: quad info for connection |
3008 | * @caller_cm_node: pointer to cm_node structure to return |
3009 | */ |
3010 | static int irdma_create_cm_node(struct irdma_cm_core *cm_core, |
3011 | struct irdma_device *iwdev, |
3012 | struct iw_cm_conn_param *conn_param, |
3013 | struct irdma_cm_info *cm_info, |
3014 | struct irdma_cm_node **caller_cm_node) |
3015 | { |
3016 | struct irdma_cm_node *cm_node; |
3017 | u16 private_data_len = conn_param->private_data_len; |
3018 | const void *private_data = conn_param->private_data; |
3019 | |
3020 | /* create a CM connection node */ |
3021 | cm_node = irdma_make_cm_node(cm_core, iwdev, cm_info, NULL); |
3022 | if (!cm_node) |
3023 | return -ENOMEM; |
3024 | |
3025 | /* set our node side to client (active) side */ |
3026 | cm_node->tcp_cntxt.client = 1; |
3027 | cm_node->tcp_cntxt.rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE; |
3028 | |
3029 | irdma_record_ird_ord(cm_node, conn_ird: conn_param->ird, conn_ord: conn_param->ord); |
3030 | |
3031 | cm_node->pdata.size = private_data_len; |
3032 | cm_node->pdata.addr = cm_node->pdata_buf; |
3033 | |
3034 | memcpy(cm_node->pdata_buf, private_data, private_data_len); |
3035 | *caller_cm_node = cm_node; |
3036 | |
3037 | return 0; |
3038 | } |
3039 | |
3040 | /** |
3041 | * irdma_cm_reject - reject and teardown a connection |
3042 | * @cm_node: connection's node |
3043 | * @pdata: ptr to private data for reject |
3044 | * @plen: size of private data |
3045 | */ |
3046 | static int irdma_cm_reject(struct irdma_cm_node *cm_node, const void *pdata, |
3047 | u8 plen) |
3048 | { |
3049 | int ret; |
3050 | int passive_state; |
3051 | |
3052 | if (cm_node->tcp_cntxt.client) |
3053 | return 0; |
3054 | |
3055 | irdma_cleanup_retrans_entry(cm_node); |
3056 | |
3057 | passive_state = atomic_add_return(i: 1, v: &cm_node->passive_state); |
3058 | if (passive_state == IRDMA_SEND_RESET_EVENT) { |
3059 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
3060 | irdma_rem_ref_cm_node(cm_node); |
3061 | return 0; |
3062 | } |
3063 | |
3064 | if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) { |
3065 | irdma_rem_ref_cm_node(cm_node); |
3066 | return 0; |
3067 | } |
3068 | |
3069 | ret = irdma_send_mpa_reject(cm_node, pdata, plen); |
3070 | if (!ret) |
3071 | return 0; |
3072 | |
3073 | cm_node->state = IRDMA_CM_STATE_CLOSED; |
3074 | if (irdma_send_reset(cm_node)) |
3075 | ibdev_dbg(&cm_node->iwdev->ibdev, |
3076 | "CM: send reset failed\n" ); |
3077 | |
3078 | return ret; |
3079 | } |
3080 | |
3081 | /** |
3082 | * irdma_cm_close - close of cm connection |
3083 | * @cm_node: connection's node |
3084 | */ |
3085 | static int irdma_cm_close(struct irdma_cm_node *cm_node) |
3086 | { |
3087 | switch (cm_node->state) { |
3088 | case IRDMA_CM_STATE_SYN_RCVD: |
3089 | case IRDMA_CM_STATE_SYN_SENT: |
3090 | case IRDMA_CM_STATE_ONE_SIDE_ESTABLISHED: |
3091 | case IRDMA_CM_STATE_ESTABLISHED: |
3092 | case IRDMA_CM_STATE_ACCEPTING: |
3093 | case IRDMA_CM_STATE_MPAREQ_SENT: |
3094 | case IRDMA_CM_STATE_MPAREQ_RCVD: |
3095 | irdma_cleanup_retrans_entry(cm_node); |
3096 | irdma_send_reset(cm_node); |
3097 | break; |
3098 | case IRDMA_CM_STATE_CLOSE_WAIT: |
3099 | cm_node->state = IRDMA_CM_STATE_LAST_ACK; |
3100 | irdma_send_fin(cm_node); |
3101 | break; |
3102 | case IRDMA_CM_STATE_FIN_WAIT1: |
3103 | case IRDMA_CM_STATE_FIN_WAIT2: |
3104 | case IRDMA_CM_STATE_LAST_ACK: |
3105 | case IRDMA_CM_STATE_TIME_WAIT: |
3106 | case IRDMA_CM_STATE_CLOSING: |
3107 | return -EINVAL; |
3108 | case IRDMA_CM_STATE_LISTENING: |
3109 | irdma_cleanup_retrans_entry(cm_node); |
3110 | irdma_send_reset(cm_node); |
3111 | break; |
3112 | case IRDMA_CM_STATE_MPAREJ_RCVD: |
3113 | case IRDMA_CM_STATE_UNKNOWN: |
3114 | case IRDMA_CM_STATE_INITED: |
3115 | case IRDMA_CM_STATE_CLOSED: |
3116 | case IRDMA_CM_STATE_LISTENER_DESTROYED: |
3117 | irdma_rem_ref_cm_node(cm_node); |
3118 | break; |
3119 | case IRDMA_CM_STATE_OFFLOADED: |
3120 | if (cm_node->send_entry) |
3121 | ibdev_dbg(&cm_node->iwdev->ibdev, |
3122 | "CM: CM send_entry in OFFLOADED state\n" ); |
3123 | irdma_rem_ref_cm_node(cm_node); |
3124 | break; |
3125 | } |
3126 | |
3127 | return 0; |
3128 | } |
3129 | |
3130 | /** |
3131 | * irdma_receive_ilq - recv an ETHERNET packet, and process it |
3132 | * through CM |
3133 | * @vsi: VSI structure of dev |
3134 | * @rbuf: receive buffer |
3135 | */ |
3136 | void irdma_receive_ilq(struct irdma_sc_vsi *vsi, struct irdma_puda_buf *rbuf) |
3137 | { |
3138 | struct irdma_cm_node *cm_node; |
3139 | struct irdma_cm_listener *listener; |
3140 | struct iphdr *iph; |
3141 | struct ipv6hdr *ip6h; |
3142 | struct tcphdr *tcph; |
3143 | struct irdma_cm_info cm_info = {}; |
3144 | struct irdma_device *iwdev = vsi->back_vsi; |
3145 | struct irdma_cm_core *cm_core = &iwdev->cm_core; |
3146 | struct vlan_ethhdr *ethh; |
3147 | u16 vtag; |
3148 | |
3149 | /* if vlan, then maclen = 18 else 14 */ |
3150 | iph = (struct iphdr *)rbuf->iph; |
3151 | print_hex_dump_debug("ILQ: RECEIVE ILQ BUFFER" , DUMP_PREFIX_OFFSET, |
3152 | 16, 8, rbuf->mem.va, rbuf->totallen, false); |
3153 | if (iwdev->rf->sc_dev.hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2) { |
3154 | if (rbuf->vlan_valid) { |
3155 | vtag = rbuf->vlan_id; |
3156 | cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >> |
3157 | VLAN_PRIO_SHIFT; |
3158 | cm_info.vlan_id = vtag & VLAN_VID_MASK; |
3159 | } else { |
3160 | cm_info.vlan_id = 0xFFFF; |
3161 | } |
3162 | } else { |
3163 | ethh = rbuf->mem.va; |
3164 | |
3165 | if (ethh->h_vlan_proto == htons(ETH_P_8021Q)) { |
3166 | vtag = ntohs(ethh->h_vlan_TCI); |
3167 | cm_info.user_pri = (vtag & VLAN_PRIO_MASK) >> |
3168 | VLAN_PRIO_SHIFT; |
3169 | cm_info.vlan_id = vtag & VLAN_VID_MASK; |
3170 | ibdev_dbg(&cm_core->iwdev->ibdev, |
3171 | "CM: vlan_id=%d\n" , cm_info.vlan_id); |
3172 | } else { |
3173 | cm_info.vlan_id = 0xFFFF; |
3174 | } |
3175 | } |
3176 | tcph = (struct tcphdr *)rbuf->tcph; |
3177 | |
3178 | if (rbuf->ipv4) { |
3179 | cm_info.loc_addr[0] = ntohl(iph->daddr); |
3180 | cm_info.rem_addr[0] = ntohl(iph->saddr); |
3181 | cm_info.ipv4 = true; |
3182 | cm_info.tos = iph->tos; |
3183 | } else { |
3184 | ip6h = (struct ipv6hdr *)rbuf->iph; |
3185 | irdma_copy_ip_ntohl(dst: cm_info.loc_addr, |
3186 | src: ip6h->daddr.in6_u.u6_addr32); |
3187 | irdma_copy_ip_ntohl(dst: cm_info.rem_addr, |
3188 | src: ip6h->saddr.in6_u.u6_addr32); |
3189 | cm_info.ipv4 = false; |
3190 | cm_info.tos = (ip6h->priority << 4) | (ip6h->flow_lbl[0] >> 4); |
3191 | } |
3192 | cm_info.loc_port = ntohs(tcph->dest); |
3193 | cm_info.rem_port = ntohs(tcph->source); |
3194 | cm_node = irdma_find_node(cm_core, rem_port: cm_info.rem_port, rem_addr: cm_info.rem_addr, |
3195 | loc_port: cm_info.loc_port, loc_addr: cm_info.loc_addr, vlan_id: cm_info.vlan_id); |
3196 | |
3197 | if (!cm_node) { |
3198 | /* Only type of packet accepted are for the |
3199 | * PASSIVE open (syn only) |
3200 | */ |
3201 | if (!tcph->syn || tcph->ack) |
3202 | return; |
3203 | |
3204 | listener = irdma_find_listener(cm_core, |
3205 | dst_addr: cm_info.loc_addr, |
3206 | ipv4: cm_info.ipv4, |
3207 | dst_port: cm_info.loc_port, |
3208 | vlan_id: cm_info.vlan_id, |
3209 | listener_state: IRDMA_CM_LISTENER_ACTIVE_STATE); |
3210 | if (!listener) { |
3211 | cm_info.cm_id = NULL; |
3212 | ibdev_dbg(&cm_core->iwdev->ibdev, |
3213 | "CM: no listener found\n" ); |
3214 | return; |
3215 | } |
3216 | |
3217 | cm_info.cm_id = listener->cm_id; |
3218 | cm_node = irdma_make_cm_node(cm_core, iwdev, cm_info: &cm_info, |
3219 | listener); |
3220 | if (!cm_node) { |
3221 | ibdev_dbg(&cm_core->iwdev->ibdev, |
3222 | "CM: allocate node failed\n" ); |
3223 | refcount_dec(r: &listener->refcnt); |
3224 | return; |
3225 | } |
3226 | |
3227 | if (!tcph->rst && !tcph->fin) { |
3228 | cm_node->state = IRDMA_CM_STATE_LISTENING; |
3229 | } else { |
3230 | irdma_rem_ref_cm_node(cm_node); |
3231 | return; |
3232 | } |
3233 | |
3234 | refcount_inc(r: &cm_node->refcnt); |
3235 | } else if (cm_node->state == IRDMA_CM_STATE_OFFLOADED) { |
3236 | irdma_rem_ref_cm_node(cm_node); |
3237 | return; |
3238 | } |
3239 | |
3240 | irdma_process_pkt(cm_node, rbuf); |
3241 | irdma_rem_ref_cm_node(cm_node); |
3242 | } |
3243 | |
3244 | static int irdma_add_qh(struct irdma_cm_node *cm_node, bool active) |
3245 | { |
3246 | if (!active) |
3247 | irdma_add_conn_est_qh(cm_node); |
3248 | return 0; |
3249 | } |
3250 | |
3251 | static void irdma_cm_free_ah_nop(struct irdma_cm_node *cm_node) |
3252 | { |
3253 | } |
3254 | |
3255 | /** |
3256 | * irdma_setup_cm_core - setup top level instance of a cm core |
3257 | * @iwdev: iwarp device structure |
3258 | * @rdma_ver: HW version |
3259 | */ |
3260 | int irdma_setup_cm_core(struct irdma_device *iwdev, u8 rdma_ver) |
3261 | { |
3262 | struct irdma_cm_core *cm_core = &iwdev->cm_core; |
3263 | |
3264 | cm_core->iwdev = iwdev; |
3265 | cm_core->dev = &iwdev->rf->sc_dev; |
3266 | |
3267 | /* Handles CM event work items send to Iwarp core */ |
3268 | cm_core->event_wq = alloc_ordered_workqueue("iwarp-event-wq" , 0); |
3269 | if (!cm_core->event_wq) |
3270 | return -ENOMEM; |
3271 | |
3272 | INIT_LIST_HEAD(list: &cm_core->listen_list); |
3273 | |
3274 | timer_setup(&cm_core->tcp_timer, irdma_cm_timer_tick, 0); |
3275 | |
3276 | spin_lock_init(&cm_core->ht_lock); |
3277 | spin_lock_init(&cm_core->listen_list_lock); |
3278 | spin_lock_init(&cm_core->apbvt_lock); |
3279 | switch (rdma_ver) { |
3280 | case IRDMA_GEN_1: |
3281 | cm_core->form_cm_frame = irdma_form_uda_cm_frame; |
3282 | cm_core->cm_create_ah = irdma_add_qh; |
3283 | cm_core->cm_free_ah = irdma_cm_free_ah_nop; |
3284 | break; |
3285 | case IRDMA_GEN_2: |
3286 | default: |
3287 | cm_core->form_cm_frame = irdma_form_ah_cm_frame; |
3288 | cm_core->cm_create_ah = irdma_cm_create_ah; |
3289 | cm_core->cm_free_ah = irdma_cm_free_ah; |
3290 | } |
3291 | |
3292 | return 0; |
3293 | } |
3294 | |
3295 | /** |
3296 | * irdma_cleanup_cm_core - deallocate a top level instance of a |
3297 | * cm core |
3298 | * @cm_core: cm's core |
3299 | */ |
3300 | void irdma_cleanup_cm_core(struct irdma_cm_core *cm_core) |
3301 | { |
3302 | if (!cm_core) |
3303 | return; |
3304 | |
3305 | del_timer_sync(timer: &cm_core->tcp_timer); |
3306 | |
3307 | destroy_workqueue(wq: cm_core->event_wq); |
3308 | cm_core->dev->ws_reset(&cm_core->iwdev->vsi); |
3309 | } |
3310 | |
3311 | /** |
3312 | * irdma_init_tcp_ctx - setup qp context |
3313 | * @cm_node: connection's node |
3314 | * @tcp_info: offload info for tcp |
3315 | * @iwqp: associate qp for the connection |
3316 | */ |
3317 | static void irdma_init_tcp_ctx(struct irdma_cm_node *cm_node, |
3318 | struct irdma_tcp_offload_info *tcp_info, |
3319 | struct irdma_qp *iwqp) |
3320 | { |
3321 | tcp_info->ipv4 = cm_node->ipv4; |
3322 | tcp_info->drop_ooo_seg = !iwqp->iwdev->iw_ooo; |
3323 | tcp_info->wscale = true; |
3324 | tcp_info->ignore_tcp_opt = true; |
3325 | tcp_info->ignore_tcp_uns_opt = true; |
3326 | tcp_info->no_nagle = false; |
3327 | |
3328 | tcp_info->ttl = IRDMA_DEFAULT_TTL; |
3329 | tcp_info->rtt_var = IRDMA_DEFAULT_RTT_VAR; |
3330 | tcp_info->ss_thresh = IRDMA_DEFAULT_SS_THRESH; |
3331 | tcp_info->rexmit_thresh = IRDMA_DEFAULT_REXMIT_THRESH; |
3332 | |
3333 | tcp_info->tcp_state = IRDMA_TCP_STATE_ESTABLISHED; |
3334 | tcp_info->snd_wscale = cm_node->tcp_cntxt.snd_wscale; |
3335 | tcp_info->rcv_wscale = cm_node->tcp_cntxt.rcv_wscale; |
3336 | |
3337 | tcp_info->snd_nxt = cm_node->tcp_cntxt.loc_seq_num; |
3338 | tcp_info->snd_wnd = cm_node->tcp_cntxt.snd_wnd; |
3339 | tcp_info->rcv_nxt = cm_node->tcp_cntxt.rcv_nxt; |
3340 | tcp_info->snd_max = cm_node->tcp_cntxt.loc_seq_num; |
3341 | |
3342 | tcp_info->snd_una = cm_node->tcp_cntxt.loc_seq_num; |
3343 | tcp_info->cwnd = 2 * cm_node->tcp_cntxt.mss; |
3344 | tcp_info->snd_wl1 = cm_node->tcp_cntxt.rcv_nxt; |
3345 | tcp_info->snd_wl2 = cm_node->tcp_cntxt.loc_seq_num; |
3346 | tcp_info->max_snd_window = cm_node->tcp_cntxt.max_snd_wnd; |
3347 | tcp_info->rcv_wnd = cm_node->tcp_cntxt.rcv_wnd |
3348 | << cm_node->tcp_cntxt.rcv_wscale; |
3349 | |
3350 | tcp_info->flow_label = 0; |
3351 | tcp_info->snd_mss = (u32)cm_node->tcp_cntxt.mss; |
3352 | tcp_info->tos = cm_node->tos; |
3353 | if (cm_node->vlan_id < VLAN_N_VID) { |
3354 | tcp_info->insert_vlan_tag = true; |
3355 | tcp_info->vlan_tag = cm_node->vlan_id; |
3356 | tcp_info->vlan_tag |= cm_node->user_pri << VLAN_PRIO_SHIFT; |
3357 | } |
3358 | if (cm_node->ipv4) { |
3359 | tcp_info->src_port = cm_node->loc_port; |
3360 | tcp_info->dst_port = cm_node->rem_port; |
3361 | |
3362 | tcp_info->dest_ip_addr[3] = cm_node->rem_addr[0]; |
3363 | tcp_info->local_ipaddr[3] = cm_node->loc_addr[0]; |
3364 | tcp_info->arp_idx = (u16)irdma_arp_table(rf: iwqp->iwdev->rf, |
3365 | ip_addr: &tcp_info->dest_ip_addr[3], |
3366 | ipv4: true, NULL, |
3367 | IRDMA_ARP_RESOLVE); |
3368 | } else { |
3369 | tcp_info->src_port = cm_node->loc_port; |
3370 | tcp_info->dst_port = cm_node->rem_port; |
3371 | memcpy(tcp_info->dest_ip_addr, cm_node->rem_addr, |
3372 | sizeof(tcp_info->dest_ip_addr)); |
3373 | memcpy(tcp_info->local_ipaddr, cm_node->loc_addr, |
3374 | sizeof(tcp_info->local_ipaddr)); |
3375 | |
3376 | tcp_info->arp_idx = (u16)irdma_arp_table(rf: iwqp->iwdev->rf, |
3377 | ip_addr: &tcp_info->dest_ip_addr[0], |
3378 | ipv4: false, NULL, |
3379 | IRDMA_ARP_RESOLVE); |
3380 | } |
3381 | } |
3382 | |
3383 | /** |
3384 | * irdma_cm_init_tsa_conn - setup qp for RTS |
3385 | * @iwqp: associate qp for the connection |
3386 | * @cm_node: connection's node |
3387 | */ |
3388 | static void irdma_cm_init_tsa_conn(struct irdma_qp *iwqp, |
3389 | struct irdma_cm_node *cm_node) |
3390 | { |
3391 | struct irdma_iwarp_offload_info *iwarp_info; |
3392 | struct irdma_qp_host_ctx_info *ctx_info; |
3393 | |
3394 | iwarp_info = &iwqp->iwarp_info; |
3395 | ctx_info = &iwqp->ctx_info; |
3396 | |
3397 | ctx_info->tcp_info = &iwqp->tcp_info; |
3398 | ctx_info->send_cq_num = iwqp->iwscq->sc_cq.cq_uk.cq_id; |
3399 | ctx_info->rcv_cq_num = iwqp->iwrcq->sc_cq.cq_uk.cq_id; |
3400 | |
3401 | iwarp_info->ord_size = cm_node->ord_size; |
3402 | iwarp_info->ird_size = cm_node->ird_size; |
3403 | iwarp_info->rd_en = true; |
3404 | iwarp_info->rdmap_ver = 1; |
3405 | iwarp_info->ddp_ver = 1; |
3406 | iwarp_info->pd_id = iwqp->iwpd->sc_pd.pd_id; |
3407 | |
3408 | ctx_info->tcp_info_valid = true; |
3409 | ctx_info->iwarp_info_valid = true; |
3410 | ctx_info->user_pri = cm_node->user_pri; |
3411 | |
3412 | irdma_init_tcp_ctx(cm_node, tcp_info: &iwqp->tcp_info, iwqp); |
3413 | if (cm_node->snd_mark_en) { |
3414 | iwarp_info->snd_mark_en = true; |
3415 | iwarp_info->snd_mark_offset = (iwqp->tcp_info.snd_nxt & SNDMARKER_SEQNMASK) + |
3416 | cm_node->lsmm_size; |
3417 | } |
3418 | |
3419 | cm_node->state = IRDMA_CM_STATE_OFFLOADED; |
3420 | iwqp->tcp_info.tcp_state = IRDMA_TCP_STATE_ESTABLISHED; |
3421 | iwqp->tcp_info.src_mac_addr_idx = iwqp->iwdev->mac_ip_table_idx; |
3422 | |
3423 | if (cm_node->rcv_mark_en) { |
3424 | iwarp_info->rcv_mark_en = true; |
3425 | iwarp_info->align_hdrs = true; |
3426 | } |
3427 | |
3428 | irdma_sc_qp_setctx(qp: &iwqp->sc_qp, qp_ctx: iwqp->host_ctx.va, info: ctx_info); |
3429 | |
3430 | /* once tcp_info is set, no need to do it again */ |
3431 | ctx_info->tcp_info_valid = false; |
3432 | ctx_info->iwarp_info_valid = false; |
3433 | } |
3434 | |
3435 | /** |
3436 | * irdma_cm_disconn - when a connection is being closed |
3437 | * @iwqp: associated qp for the connection |
3438 | */ |
3439 | void irdma_cm_disconn(struct irdma_qp *iwqp) |
3440 | { |
3441 | struct irdma_device *iwdev = iwqp->iwdev; |
3442 | struct disconn_work *work; |
3443 | unsigned long flags; |
3444 | |
3445 | work = kzalloc(size: sizeof(*work), GFP_ATOMIC); |
3446 | if (!work) |
3447 | return; |
3448 | |
3449 | spin_lock_irqsave(&iwdev->rf->qptable_lock, flags); |
3450 | if (!iwdev->rf->qp_table[iwqp->ibqp.qp_num]) { |
3451 | spin_unlock_irqrestore(lock: &iwdev->rf->qptable_lock, flags); |
3452 | ibdev_dbg(&iwdev->ibdev, |
3453 | "CM: qp_id %d is already freed\n" , |
3454 | iwqp->ibqp.qp_num); |
3455 | kfree(objp: work); |
3456 | return; |
3457 | } |
3458 | irdma_qp_add_ref(ibqp: &iwqp->ibqp); |
3459 | spin_unlock_irqrestore(lock: &iwdev->rf->qptable_lock, flags); |
3460 | |
3461 | work->iwqp = iwqp; |
3462 | INIT_WORK(&work->work, irdma_disconnect_worker); |
3463 | queue_work(wq: iwdev->cleanup_wq, work: &work->work); |
3464 | } |
3465 | |
3466 | /** |
3467 | * irdma_qp_disconnect - free qp and close cm |
3468 | * @iwqp: associate qp for the connection |
3469 | */ |
3470 | static void irdma_qp_disconnect(struct irdma_qp *iwqp) |
3471 | { |
3472 | struct irdma_device *iwdev = iwqp->iwdev; |
3473 | |
3474 | iwqp->active_conn = 0; |
3475 | /* close the CM node down if it is still active */ |
3476 | ibdev_dbg(&iwdev->ibdev, "CM: Call close API\n" ); |
3477 | irdma_cm_close(cm_node: iwqp->cm_node); |
3478 | } |
3479 | |
3480 | /** |
3481 | * irdma_cm_disconn_true - called by worker thread to disconnect qp |
3482 | * @iwqp: associate qp for the connection |
3483 | */ |
3484 | static void irdma_cm_disconn_true(struct irdma_qp *iwqp) |
3485 | { |
3486 | struct iw_cm_id *cm_id; |
3487 | struct irdma_device *iwdev; |
3488 | struct irdma_sc_qp *qp = &iwqp->sc_qp; |
3489 | u16 last_ae; |
3490 | u8 original_hw_tcp_state; |
3491 | u8 original_ibqp_state; |
3492 | int disconn_status = 0; |
3493 | int issue_disconn = 0; |
3494 | int issue_close = 0; |
3495 | int issue_flush = 0; |
3496 | unsigned long flags; |
3497 | int err; |
3498 | |
3499 | iwdev = iwqp->iwdev; |
3500 | spin_lock_irqsave(&iwqp->lock, flags); |
3501 | if (rdma_protocol_roce(device: &iwdev->ibdev, port_num: 1)) { |
3502 | struct ib_qp_attr attr; |
3503 | |
3504 | if (iwqp->flush_issued || iwqp->sc_qp.qp_uk.destroy_pending) { |
3505 | spin_unlock_irqrestore(lock: &iwqp->lock, flags); |
3506 | return; |
3507 | } |
3508 | |
3509 | spin_unlock_irqrestore(lock: &iwqp->lock, flags); |
3510 | |
3511 | attr.qp_state = IB_QPS_ERR; |
3512 | irdma_modify_qp_roce(ibqp: &iwqp->ibqp, attr: &attr, attr_mask: IB_QP_STATE, NULL); |
3513 | irdma_ib_qp_event(iwqp, event: qp->event_type); |
3514 | return; |
3515 | } |
3516 | |
3517 | cm_id = iwqp->cm_id; |
3518 | original_hw_tcp_state = iwqp->hw_tcp_state; |
3519 | original_ibqp_state = iwqp->ibqp_state; |
3520 | last_ae = iwqp->last_aeq; |
3521 | |
3522 | if (qp->term_flags) { |
3523 | issue_disconn = 1; |
3524 | issue_close = 1; |
3525 | iwqp->cm_id = NULL; |
3526 | irdma_terminate_del_timer(qp); |
3527 | if (!iwqp->flush_issued) { |
3528 | iwqp->flush_issued = 1; |
3529 | issue_flush = 1; |
3530 | } |
3531 | } else if ((original_hw_tcp_state == IRDMA_TCP_STATE_CLOSE_WAIT) || |
3532 | ((original_ibqp_state == IB_QPS_RTS) && |
3533 | (last_ae == IRDMA_AE_LLP_CONNECTION_RESET))) { |
3534 | issue_disconn = 1; |
3535 | if (last_ae == IRDMA_AE_LLP_CONNECTION_RESET) |
3536 | disconn_status = -ECONNRESET; |
3537 | } |
3538 | |
3539 | if (original_hw_tcp_state == IRDMA_TCP_STATE_CLOSED || |
3540 | original_hw_tcp_state == IRDMA_TCP_STATE_TIME_WAIT || |
3541 | last_ae == IRDMA_AE_RDMAP_ROE_BAD_LLP_CLOSE || |
3542 | last_ae == IRDMA_AE_BAD_CLOSE || |
3543 | last_ae == IRDMA_AE_LLP_CONNECTION_RESET || iwdev->rf->reset || !cm_id) { |
3544 | issue_close = 1; |
3545 | iwqp->cm_id = NULL; |
3546 | qp->term_flags = 0; |
3547 | if (!iwqp->flush_issued) { |
3548 | iwqp->flush_issued = 1; |
3549 | issue_flush = 1; |
3550 | } |
3551 | } |
3552 | |
3553 | spin_unlock_irqrestore(lock: &iwqp->lock, flags); |
3554 | if (issue_flush && !iwqp->sc_qp.qp_uk.destroy_pending) { |
3555 | irdma_flush_wqes(iwqp, IRDMA_FLUSH_SQ | IRDMA_FLUSH_RQ | |
3556 | IRDMA_FLUSH_WAIT); |
3557 | |
3558 | if (qp->term_flags) |
3559 | irdma_ib_qp_event(iwqp, event: qp->event_type); |
3560 | } |
3561 | |
3562 | if (!cm_id || !cm_id->event_handler) |
3563 | return; |
3564 | |
3565 | spin_lock_irqsave(&iwdev->cm_core.ht_lock, flags); |
3566 | if (!iwqp->cm_node) { |
3567 | spin_unlock_irqrestore(lock: &iwdev->cm_core.ht_lock, flags); |
3568 | return; |
3569 | } |
3570 | refcount_inc(r: &iwqp->cm_node->refcnt); |
3571 | |
3572 | spin_unlock_irqrestore(lock: &iwdev->cm_core.ht_lock, flags); |
3573 | |
3574 | if (issue_disconn) { |
3575 | err = irdma_send_cm_event(cm_node: iwqp->cm_node, cm_id, |
3576 | type: IW_CM_EVENT_DISCONNECT, |
3577 | status: disconn_status); |
3578 | if (err) |
3579 | ibdev_dbg(&iwdev->ibdev, |
3580 | "CM: disconnect event failed: - cm_id = %p\n" , |
3581 | cm_id); |
3582 | } |
3583 | if (issue_close) { |
3584 | cm_id->provider_data = iwqp; |
3585 | err = irdma_send_cm_event(cm_node: iwqp->cm_node, cm_id, |
3586 | type: IW_CM_EVENT_CLOSE, status: 0); |
3587 | if (err) |
3588 | ibdev_dbg(&iwdev->ibdev, |
3589 | "CM: close event failed: - cm_id = %p\n" , |
3590 | cm_id); |
3591 | irdma_qp_disconnect(iwqp); |
3592 | } |
3593 | irdma_rem_ref_cm_node(cm_node: iwqp->cm_node); |
3594 | } |
3595 | |
3596 | /** |
3597 | * irdma_disconnect_worker - worker for connection close |
3598 | * @work: points or disconn structure |
3599 | */ |
3600 | static void irdma_disconnect_worker(struct work_struct *work) |
3601 | { |
3602 | struct disconn_work *dwork = container_of(work, struct disconn_work, work); |
3603 | struct irdma_qp *iwqp = dwork->iwqp; |
3604 | |
3605 | kfree(objp: dwork); |
3606 | irdma_cm_disconn_true(iwqp); |
3607 | irdma_qp_rem_ref(ibqp: &iwqp->ibqp); |
3608 | } |
3609 | |
3610 | /** |
3611 | * irdma_free_lsmm_rsrc - free lsmm memory and deregister |
3612 | * @iwqp: associate qp for the connection |
3613 | */ |
3614 | void irdma_free_lsmm_rsrc(struct irdma_qp *iwqp) |
3615 | { |
3616 | struct irdma_device *iwdev; |
3617 | |
3618 | iwdev = iwqp->iwdev; |
3619 | |
3620 | if (iwqp->ietf_mem.va) { |
3621 | if (iwqp->lsmm_mr) |
3622 | iwdev->ibdev.ops.dereg_mr(iwqp->lsmm_mr, NULL); |
3623 | dma_free_coherent(dev: iwdev->rf->sc_dev.hw->device, |
3624 | size: iwqp->ietf_mem.size, cpu_addr: iwqp->ietf_mem.va, |
3625 | dma_handle: iwqp->ietf_mem.pa); |
3626 | iwqp->ietf_mem.va = NULL; |
3627 | } |
3628 | } |
3629 | |
3630 | /** |
3631 | * irdma_accept - registered call for connection to be accepted |
3632 | * @cm_id: cm information for passive connection |
3633 | * @conn_param: accpet parameters |
3634 | */ |
3635 | int irdma_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
3636 | { |
3637 | struct ib_qp *ibqp; |
3638 | struct irdma_qp *iwqp; |
3639 | struct irdma_device *iwdev; |
3640 | struct irdma_sc_dev *dev; |
3641 | struct irdma_cm_node *cm_node; |
3642 | struct ib_qp_attr attr = {}; |
3643 | int passive_state; |
3644 | struct ib_mr *ibmr; |
3645 | struct irdma_pd *iwpd; |
3646 | u16 buf_len = 0; |
3647 | struct irdma_kmem_info accept; |
3648 | u64 tagged_offset; |
3649 | int wait_ret; |
3650 | int ret = 0; |
3651 | |
3652 | ibqp = irdma_get_qp(ibdev: cm_id->device, qpn: conn_param->qpn); |
3653 | if (!ibqp) |
3654 | return -EINVAL; |
3655 | |
3656 | iwqp = to_iwqp(ibqp); |
3657 | iwdev = iwqp->iwdev; |
3658 | dev = &iwdev->rf->sc_dev; |
3659 | cm_node = cm_id->provider_data; |
3660 | |
3661 | if (((struct sockaddr_in *)&cm_id->local_addr)->sin_family == AF_INET) { |
3662 | cm_node->ipv4 = true; |
3663 | cm_node->vlan_id = irdma_get_vlan_ipv4(addr: cm_node->loc_addr); |
3664 | } else { |
3665 | cm_node->ipv4 = false; |
3666 | irdma_get_vlan_mac_ipv6(addr: cm_node->loc_addr, vlan_id: &cm_node->vlan_id, |
3667 | NULL); |
3668 | } |
3669 | ibdev_dbg(&iwdev->ibdev, "CM: Accept vlan_id=%d\n" , |
3670 | cm_node->vlan_id); |
3671 | |
3672 | trace_irdma_accept(cm_node, type: 0, NULL); |
3673 | |
3674 | if (cm_node->state == IRDMA_CM_STATE_LISTENER_DESTROYED) { |
3675 | ret = -EINVAL; |
3676 | goto error; |
3677 | } |
3678 | |
3679 | passive_state = atomic_add_return(i: 1, v: &cm_node->passive_state); |
3680 | if (passive_state == IRDMA_SEND_RESET_EVENT) { |
3681 | ret = -ECONNRESET; |
3682 | goto error; |
3683 | } |
3684 | |
3685 | buf_len = conn_param->private_data_len + IRDMA_MAX_IETF_SIZE; |
3686 | iwqp->ietf_mem.size = ALIGN(buf_len, 1); |
3687 | iwqp->ietf_mem.va = dma_alloc_coherent(dev: dev->hw->device, |
3688 | size: iwqp->ietf_mem.size, |
3689 | dma_handle: &iwqp->ietf_mem.pa, GFP_KERNEL); |
3690 | if (!iwqp->ietf_mem.va) { |
3691 | ret = -ENOMEM; |
3692 | goto error; |
3693 | } |
3694 | |
3695 | cm_node->pdata.size = conn_param->private_data_len; |
3696 | accept.addr = iwqp->ietf_mem.va; |
3697 | accept.size = irdma_cm_build_mpa_frame(cm_node, mpa: &accept, mpa_key: MPA_KEY_REPLY); |
3698 | memcpy((u8 *)accept.addr + accept.size, conn_param->private_data, |
3699 | conn_param->private_data_len); |
3700 | |
3701 | if (cm_node->dev->ws_add(iwqp->sc_qp.vsi, cm_node->user_pri)) { |
3702 | ret = -ENOMEM; |
3703 | goto error; |
3704 | } |
3705 | iwqp->sc_qp.user_pri = cm_node->user_pri; |
3706 | irdma_qp_add_qos(qp: &iwqp->sc_qp); |
3707 | /* setup our first outgoing iWarp send WQE (the IETF frame response) */ |
3708 | iwpd = iwqp->iwpd; |
3709 | tagged_offset = (uintptr_t)iwqp->ietf_mem.va; |
3710 | ibmr = irdma_reg_phys_mr(ib_pd: &iwpd->ibpd, addr: iwqp->ietf_mem.pa, size: buf_len, |
3711 | acc: IB_ACCESS_LOCAL_WRITE, iova_start: &tagged_offset); |
3712 | if (IS_ERR(ptr: ibmr)) { |
3713 | ret = -ENOMEM; |
3714 | goto error; |
3715 | } |
3716 | |
3717 | ibmr->pd = &iwpd->ibpd; |
3718 | ibmr->device = iwpd->ibpd.device; |
3719 | iwqp->lsmm_mr = ibmr; |
3720 | if (iwqp->page) |
3721 | iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(page: iwqp->page); |
3722 | |
3723 | cm_node->lsmm_size = accept.size + conn_param->private_data_len; |
3724 | irdma_sc_send_lsmm(qp: &iwqp->sc_qp, lsmm_buf: iwqp->ietf_mem.va, size: cm_node->lsmm_size, |
3725 | stag: ibmr->lkey); |
3726 | |
3727 | if (iwqp->page) |
3728 | kunmap_local(iwqp->sc_qp.qp_uk.sq_base); |
3729 | |
3730 | iwqp->cm_id = cm_id; |
3731 | cm_node->cm_id = cm_id; |
3732 | |
3733 | cm_id->provider_data = iwqp; |
3734 | iwqp->active_conn = 0; |
3735 | iwqp->cm_node = cm_node; |
3736 | cm_node->iwqp = iwqp; |
3737 | irdma_cm_init_tsa_conn(iwqp, cm_node); |
3738 | irdma_qp_add_ref(ibqp: &iwqp->ibqp); |
3739 | cm_id->add_ref(cm_id); |
3740 | |
3741 | attr.qp_state = IB_QPS_RTS; |
3742 | cm_node->qhash_set = false; |
3743 | cm_node->cm_core->cm_free_ah(cm_node); |
3744 | |
3745 | irdma_modify_qp(ibqp: &iwqp->ibqp, attr: &attr, attr_mask: IB_QP_STATE, NULL); |
3746 | if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) { |
3747 | wait_ret = wait_event_interruptible_timeout(iwqp->waitq, |
3748 | iwqp->rts_ae_rcvd, |
3749 | IRDMA_MAX_TIMEOUT); |
3750 | if (!wait_ret) { |
3751 | ibdev_dbg(&iwdev->ibdev, |
3752 | "CM: Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n" , |
3753 | cm_node, cm_node->loc_port, |
3754 | cm_node->rem_port, cm_node->cm_id); |
3755 | ret = -ECONNRESET; |
3756 | goto error; |
3757 | } |
3758 | } |
3759 | |
3760 | irdma_send_cm_event(cm_node, cm_id, type: IW_CM_EVENT_ESTABLISHED, status: 0); |
3761 | cm_node->accelerated = true; |
3762 | complete(&cm_node->establish_comp); |
3763 | |
3764 | if (cm_node->accept_pend) { |
3765 | atomic_dec(v: &cm_node->listener->pend_accepts_cnt); |
3766 | cm_node->accept_pend = 0; |
3767 | } |
3768 | |
3769 | ibdev_dbg(&iwdev->ibdev, |
3770 | "CM: rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4 cm_node=%p cm_id=%p qp_id = %d\n\n" , |
3771 | cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr, |
3772 | cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num); |
3773 | cm_node->cm_core->stats_accepts++; |
3774 | |
3775 | return 0; |
3776 | error: |
3777 | irdma_free_lsmm_rsrc(iwqp); |
3778 | irdma_rem_ref_cm_node(cm_node); |
3779 | |
3780 | return ret; |
3781 | } |
3782 | |
3783 | /** |
3784 | * irdma_reject - registered call for connection to be rejected |
3785 | * @cm_id: cm information for passive connection |
3786 | * @pdata: private data to be sent |
3787 | * @pdata_len: private data length |
3788 | */ |
3789 | int irdma_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
3790 | { |
3791 | struct irdma_device *iwdev; |
3792 | struct irdma_cm_node *cm_node; |
3793 | |
3794 | cm_node = cm_id->provider_data; |
3795 | cm_node->pdata.size = pdata_len; |
3796 | |
3797 | trace_irdma_reject(cm_node, type: 0, NULL); |
3798 | |
3799 | iwdev = to_iwdev(ibdev: cm_id->device); |
3800 | if (!iwdev) |
3801 | return -EINVAL; |
3802 | |
3803 | cm_node->cm_core->stats_rejects++; |
3804 | |
3805 | if (pdata_len + sizeof(struct ietf_mpa_v2) > IRDMA_MAX_CM_BUF) |
3806 | return -EINVAL; |
3807 | |
3808 | return irdma_cm_reject(cm_node, pdata, plen: pdata_len); |
3809 | } |
3810 | |
3811 | /** |
3812 | * irdma_connect - registered call for connection to be established |
3813 | * @cm_id: cm information for passive connection |
3814 | * @conn_param: Information about the connection |
3815 | */ |
3816 | int irdma_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
3817 | { |
3818 | struct ib_qp *ibqp; |
3819 | struct irdma_qp *iwqp; |
3820 | struct irdma_device *iwdev; |
3821 | struct irdma_cm_node *cm_node; |
3822 | struct irdma_cm_info cm_info; |
3823 | struct sockaddr_in *laddr; |
3824 | struct sockaddr_in *raddr; |
3825 | struct sockaddr_in6 *laddr6; |
3826 | struct sockaddr_in6 *raddr6; |
3827 | int ret = 0; |
3828 | |
3829 | ibqp = irdma_get_qp(ibdev: cm_id->device, qpn: conn_param->qpn); |
3830 | if (!ibqp) |
3831 | return -EINVAL; |
3832 | iwqp = to_iwqp(ibqp); |
3833 | if (!iwqp) |
3834 | return -EINVAL; |
3835 | iwdev = iwqp->iwdev; |
3836 | if (!iwdev) |
3837 | return -EINVAL; |
3838 | |
3839 | laddr = (struct sockaddr_in *)&cm_id->m_local_addr; |
3840 | raddr = (struct sockaddr_in *)&cm_id->m_remote_addr; |
3841 | laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr; |
3842 | raddr6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr; |
3843 | |
3844 | if (!(laddr->sin_port) || !(raddr->sin_port)) |
3845 | return -EINVAL; |
3846 | |
3847 | iwqp->active_conn = 1; |
3848 | iwqp->cm_id = NULL; |
3849 | cm_id->provider_data = iwqp; |
3850 | |
3851 | /* set up the connection params for the node */ |
3852 | if (cm_id->remote_addr.ss_family == AF_INET) { |
3853 | if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4) |
3854 | return -EINVAL; |
3855 | |
3856 | cm_info.ipv4 = true; |
3857 | memset(cm_info.loc_addr, 0, sizeof(cm_info.loc_addr)); |
3858 | memset(cm_info.rem_addr, 0, sizeof(cm_info.rem_addr)); |
3859 | cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr); |
3860 | cm_info.rem_addr[0] = ntohl(raddr->sin_addr.s_addr); |
3861 | cm_info.loc_port = ntohs(laddr->sin_port); |
3862 | cm_info.rem_port = ntohs(raddr->sin_port); |
3863 | cm_info.vlan_id = irdma_get_vlan_ipv4(addr: cm_info.loc_addr); |
3864 | } else { |
3865 | if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6) |
3866 | return -EINVAL; |
3867 | |
3868 | cm_info.ipv4 = false; |
3869 | irdma_copy_ip_ntohl(dst: cm_info.loc_addr, |
3870 | src: laddr6->sin6_addr.in6_u.u6_addr32); |
3871 | irdma_copy_ip_ntohl(dst: cm_info.rem_addr, |
3872 | src: raddr6->sin6_addr.in6_u.u6_addr32); |
3873 | cm_info.loc_port = ntohs(laddr6->sin6_port); |
3874 | cm_info.rem_port = ntohs(raddr6->sin6_port); |
3875 | irdma_get_vlan_mac_ipv6(addr: cm_info.loc_addr, vlan_id: &cm_info.vlan_id, |
3876 | NULL); |
3877 | } |
3878 | cm_info.cm_id = cm_id; |
3879 | cm_info.qh_qpid = iwdev->vsi.ilq->qp_id; |
3880 | cm_info.tos = cm_id->tos; |
3881 | if (iwdev->vsi.dscp_mode) { |
3882 | cm_info.user_pri = |
3883 | iwqp->sc_qp.vsi->dscp_map[irdma_tos2dscp(tos: cm_info.tos)]; |
3884 | } else { |
3885 | cm_info.user_pri = rt_tos2priority(tos: cm_id->tos); |
3886 | cm_info.user_pri = irdma_iw_get_vlan_prio(loc_addr: cm_info.loc_addr, |
3887 | prio: cm_info.user_pri, |
3888 | ipv4: cm_info.ipv4); |
3889 | } |
3890 | |
3891 | if (iwqp->sc_qp.dev->ws_add(iwqp->sc_qp.vsi, cm_info.user_pri)) |
3892 | return -ENOMEM; |
3893 | iwqp->sc_qp.user_pri = cm_info.user_pri; |
3894 | irdma_qp_add_qos(qp: &iwqp->sc_qp); |
3895 | ibdev_dbg(&iwdev->ibdev, "DCB: TOS:[%d] UP:[%d]\n" , cm_id->tos, |
3896 | cm_info.user_pri); |
3897 | |
3898 | trace_irdma_dcb_tos(iwdev, tos: cm_id->tos, user_pri: cm_info.user_pri); |
3899 | |
3900 | ret = irdma_create_cm_node(cm_core: &iwdev->cm_core, iwdev, conn_param, cm_info: &cm_info, |
3901 | caller_cm_node: &cm_node); |
3902 | if (ret) |
3903 | return ret; |
3904 | ret = cm_node->cm_core->cm_create_ah(cm_node, true); |
3905 | if (ret) |
3906 | goto err; |
3907 | if (irdma_manage_qhash(iwdev, cminfo: &cm_info, |
3908 | etype: IRDMA_QHASH_TYPE_TCP_ESTABLISHED, |
3909 | mtype: IRDMA_QHASH_MANAGE_TYPE_ADD, NULL, wait: true)) { |
3910 | ret = -EINVAL; |
3911 | goto err; |
3912 | } |
3913 | cm_node->qhash_set = true; |
3914 | |
3915 | cm_node->apbvt_entry = irdma_add_apbvt(iwdev, port: cm_info.loc_port); |
3916 | if (!cm_node->apbvt_entry) { |
3917 | ret = -EINVAL; |
3918 | goto err; |
3919 | } |
3920 | |
3921 | cm_node->apbvt_set = true; |
3922 | iwqp->cm_node = cm_node; |
3923 | cm_node->iwqp = iwqp; |
3924 | iwqp->cm_id = cm_id; |
3925 | irdma_qp_add_ref(ibqp: &iwqp->ibqp); |
3926 | cm_id->add_ref(cm_id); |
3927 | |
3928 | if (cm_node->state != IRDMA_CM_STATE_OFFLOADED) { |
3929 | cm_node->state = IRDMA_CM_STATE_SYN_SENT; |
3930 | ret = irdma_send_syn(cm_node, sendack: 0); |
3931 | if (ret) |
3932 | goto err; |
3933 | } |
3934 | |
3935 | ibdev_dbg(&iwdev->ibdev, |
3936 | "CM: rem_port=0x%04x, loc_port=0x%04x rem_addr=%pI4 loc_addr=%pI4 cm_node=%p cm_id=%p qp_id = %d\n\n" , |
3937 | cm_node->rem_port, cm_node->loc_port, cm_node->rem_addr, |
3938 | cm_node->loc_addr, cm_node, cm_id, ibqp->qp_num); |
3939 | |
3940 | trace_irdma_connect(cm_node, type: 0, NULL); |
3941 | |
3942 | return 0; |
3943 | |
3944 | err: |
3945 | if (cm_info.ipv4) |
3946 | ibdev_dbg(&iwdev->ibdev, |
3947 | "CM: connect() FAILED: dest addr=%pI4" , |
3948 | cm_info.rem_addr); |
3949 | else |
3950 | ibdev_dbg(&iwdev->ibdev, |
3951 | "CM: connect() FAILED: dest addr=%pI6" , |
3952 | cm_info.rem_addr); |
3953 | irdma_rem_ref_cm_node(cm_node); |
3954 | iwdev->cm_core.stats_connect_errs++; |
3955 | |
3956 | return ret; |
3957 | } |
3958 | |
3959 | /** |
3960 | * irdma_create_listen - registered call creating listener |
3961 | * @cm_id: cm information for passive connection |
3962 | * @backlog: to max accept pending count |
3963 | */ |
3964 | int irdma_create_listen(struct iw_cm_id *cm_id, int backlog) |
3965 | { |
3966 | struct irdma_device *iwdev; |
3967 | struct irdma_cm_listener *cm_listen_node; |
3968 | struct irdma_cm_info cm_info = {}; |
3969 | struct sockaddr_in *laddr; |
3970 | struct sockaddr_in6 *laddr6; |
3971 | bool wildcard = false; |
3972 | int err; |
3973 | |
3974 | iwdev = to_iwdev(ibdev: cm_id->device); |
3975 | if (!iwdev) |
3976 | return -EINVAL; |
3977 | |
3978 | laddr = (struct sockaddr_in *)&cm_id->m_local_addr; |
3979 | laddr6 = (struct sockaddr_in6 *)&cm_id->m_local_addr; |
3980 | cm_info.qh_qpid = iwdev->vsi.ilq->qp_id; |
3981 | |
3982 | if (laddr->sin_family == AF_INET) { |
3983 | if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV4) |
3984 | return -EINVAL; |
3985 | |
3986 | cm_info.ipv4 = true; |
3987 | cm_info.loc_addr[0] = ntohl(laddr->sin_addr.s_addr); |
3988 | cm_info.loc_port = ntohs(laddr->sin_port); |
3989 | |
3990 | if (laddr->sin_addr.s_addr != htonl(INADDR_ANY)) { |
3991 | cm_info.vlan_id = irdma_get_vlan_ipv4(addr: cm_info.loc_addr); |
3992 | } else { |
3993 | cm_info.vlan_id = 0xFFFF; |
3994 | wildcard = true; |
3995 | } |
3996 | } else { |
3997 | if (iwdev->vsi.mtu < IRDMA_MIN_MTU_IPV6) |
3998 | return -EINVAL; |
3999 | |
4000 | cm_info.ipv4 = false; |
4001 | irdma_copy_ip_ntohl(dst: cm_info.loc_addr, |
4002 | src: laddr6->sin6_addr.in6_u.u6_addr32); |
4003 | cm_info.loc_port = ntohs(laddr6->sin6_port); |
4004 | if (ipv6_addr_type(addr: &laddr6->sin6_addr) != IPV6_ADDR_ANY) { |
4005 | irdma_get_vlan_mac_ipv6(addr: cm_info.loc_addr, |
4006 | vlan_id: &cm_info.vlan_id, NULL); |
4007 | } else { |
4008 | cm_info.vlan_id = 0xFFFF; |
4009 | wildcard = true; |
4010 | } |
4011 | } |
4012 | |
4013 | if (cm_info.vlan_id >= VLAN_N_VID && iwdev->dcb_vlan_mode) |
4014 | cm_info.vlan_id = 0; |
4015 | cm_info.backlog = backlog; |
4016 | cm_info.cm_id = cm_id; |
4017 | |
4018 | trace_irdma_create_listen(iwdev, cm_info: &cm_info); |
4019 | |
4020 | cm_listen_node = irdma_make_listen_node(cm_core: &iwdev->cm_core, iwdev, |
4021 | cm_info: &cm_info); |
4022 | if (!cm_listen_node) { |
4023 | ibdev_dbg(&iwdev->ibdev, |
4024 | "CM: cm_listen_node == NULL\n" ); |
4025 | return -ENOMEM; |
4026 | } |
4027 | |
4028 | cm_id->provider_data = cm_listen_node; |
4029 | |
4030 | cm_listen_node->tos = cm_id->tos; |
4031 | if (iwdev->vsi.dscp_mode) |
4032 | cm_listen_node->user_pri = |
4033 | iwdev->vsi.dscp_map[irdma_tos2dscp(tos: cm_id->tos)]; |
4034 | else |
4035 | cm_listen_node->user_pri = rt_tos2priority(tos: cm_id->tos); |
4036 | cm_info.user_pri = cm_listen_node->user_pri; |
4037 | if (!cm_listen_node->reused_node) { |
4038 | if (wildcard) { |
4039 | err = irdma_add_mqh(iwdev, cm_info: &cm_info, cm_listen_node); |
4040 | if (err) |
4041 | goto error; |
4042 | } else { |
4043 | if (!iwdev->vsi.dscp_mode) |
4044 | cm_listen_node->user_pri = |
4045 | irdma_iw_get_vlan_prio(loc_addr: cm_info.loc_addr, |
4046 | prio: cm_info.user_pri, |
4047 | ipv4: cm_info.ipv4); |
4048 | cm_info.user_pri = cm_listen_node->user_pri; |
4049 | err = irdma_manage_qhash(iwdev, cminfo: &cm_info, |
4050 | etype: IRDMA_QHASH_TYPE_TCP_SYN, |
4051 | mtype: IRDMA_QHASH_MANAGE_TYPE_ADD, |
4052 | NULL, wait: true); |
4053 | if (err) |
4054 | goto error; |
4055 | |
4056 | cm_listen_node->qhash_set = true; |
4057 | } |
4058 | |
4059 | cm_listen_node->apbvt_entry = irdma_add_apbvt(iwdev, |
4060 | port: cm_info.loc_port); |
4061 | if (!cm_listen_node->apbvt_entry) |
4062 | goto error; |
4063 | } |
4064 | cm_id->add_ref(cm_id); |
4065 | cm_listen_node->cm_core->stats_listen_created++; |
4066 | ibdev_dbg(&iwdev->ibdev, |
4067 | "CM: loc_port=0x%04x loc_addr=%pI4 cm_listen_node=%p cm_id=%p qhash_set=%d vlan_id=%d\n" , |
4068 | cm_listen_node->loc_port, cm_listen_node->loc_addr, |
4069 | cm_listen_node, cm_listen_node->cm_id, |
4070 | cm_listen_node->qhash_set, cm_listen_node->vlan_id); |
4071 | |
4072 | return 0; |
4073 | |
4074 | error: |
4075 | |
4076 | irdma_cm_del_listen(cm_core: &iwdev->cm_core, listener: cm_listen_node, apbvt_del: false); |
4077 | |
4078 | return -EINVAL; |
4079 | } |
4080 | |
4081 | /** |
4082 | * irdma_destroy_listen - registered call to destroy listener |
4083 | * @cm_id: cm information for passive connection |
4084 | */ |
4085 | int irdma_destroy_listen(struct iw_cm_id *cm_id) |
4086 | { |
4087 | struct irdma_device *iwdev; |
4088 | |
4089 | iwdev = to_iwdev(ibdev: cm_id->device); |
4090 | if (cm_id->provider_data) |
4091 | irdma_cm_del_listen(cm_core: &iwdev->cm_core, listener: cm_id->provider_data, |
4092 | apbvt_del: true); |
4093 | else |
4094 | ibdev_dbg(&iwdev->ibdev, |
4095 | "CM: cm_id->provider_data was NULL\n" ); |
4096 | |
4097 | cm_id->rem_ref(cm_id); |
4098 | |
4099 | return 0; |
4100 | } |
4101 | |
4102 | /** |
4103 | * irdma_teardown_list_prep - add conn nodes slated for tear down to list |
4104 | * @cm_core: cm's core |
4105 | * @teardown_list: a list to which cm_node will be selected |
4106 | * @ipaddr: pointer to ip address |
4107 | * @nfo: pointer to cm_info structure instance |
4108 | * @disconnect_all: flag indicating disconnect all QPs |
4109 | */ |
4110 | static void irdma_teardown_list_prep(struct irdma_cm_core *cm_core, |
4111 | struct list_head *teardown_list, |
4112 | u32 *ipaddr, |
4113 | struct irdma_cm_info *nfo, |
4114 | bool disconnect_all) |
4115 | { |
4116 | struct irdma_cm_node *cm_node; |
4117 | int bkt; |
4118 | |
4119 | hash_for_each_rcu(cm_core->cm_hash_tbl, bkt, cm_node, list) { |
4120 | if ((disconnect_all || |
4121 | (nfo->vlan_id == cm_node->vlan_id && |
4122 | !memcmp(p: cm_node->loc_addr, q: ipaddr, size: nfo->ipv4 ? 4 : 16))) && |
4123 | refcount_inc_not_zero(r: &cm_node->refcnt)) |
4124 | list_add(new: &cm_node->teardown_entry, head: teardown_list); |
4125 | } |
4126 | } |
4127 | |
4128 | /** |
4129 | * irdma_cm_event_connected - handle connected active node |
4130 | * @event: the info for cm_node of connection |
4131 | */ |
4132 | static void irdma_cm_event_connected(struct irdma_cm_event *event) |
4133 | { |
4134 | struct irdma_qp *iwqp; |
4135 | struct irdma_device *iwdev; |
4136 | struct irdma_cm_node *cm_node; |
4137 | struct irdma_sc_dev *dev; |
4138 | struct ib_qp_attr attr = {}; |
4139 | struct iw_cm_id *cm_id; |
4140 | int status; |
4141 | bool read0; |
4142 | int wait_ret = 0; |
4143 | |
4144 | cm_node = event->cm_node; |
4145 | cm_id = cm_node->cm_id; |
4146 | iwqp = cm_id->provider_data; |
4147 | iwdev = iwqp->iwdev; |
4148 | dev = &iwdev->rf->sc_dev; |
4149 | if (iwqp->sc_qp.qp_uk.destroy_pending) { |
4150 | status = -ETIMEDOUT; |
4151 | goto error; |
4152 | } |
4153 | |
4154 | irdma_cm_init_tsa_conn(iwqp, cm_node); |
4155 | read0 = (cm_node->send_rdma0_op == SEND_RDMA_READ_ZERO); |
4156 | if (iwqp->page) |
4157 | iwqp->sc_qp.qp_uk.sq_base = kmap_local_page(page: iwqp->page); |
4158 | irdma_sc_send_rtt(qp: &iwqp->sc_qp, read: read0); |
4159 | if (iwqp->page) |
4160 | kunmap_local(iwqp->sc_qp.qp_uk.sq_base); |
4161 | |
4162 | attr.qp_state = IB_QPS_RTS; |
4163 | cm_node->qhash_set = false; |
4164 | irdma_modify_qp(ibqp: &iwqp->ibqp, attr: &attr, attr_mask: IB_QP_STATE, NULL); |
4165 | if (dev->hw_attrs.uk_attrs.feature_flags & IRDMA_FEATURE_RTS_AE) { |
4166 | wait_ret = wait_event_interruptible_timeout(iwqp->waitq, |
4167 | iwqp->rts_ae_rcvd, |
4168 | IRDMA_MAX_TIMEOUT); |
4169 | if (!wait_ret) |
4170 | ibdev_dbg(&iwdev->ibdev, |
4171 | "CM: Slow Connection: cm_node=%p, loc_port=%d, rem_port=%d, cm_id=%p\n" , |
4172 | cm_node, cm_node->loc_port, |
4173 | cm_node->rem_port, cm_node->cm_id); |
4174 | } |
4175 | |
4176 | irdma_send_cm_event(cm_node, cm_id, type: IW_CM_EVENT_CONNECT_REPLY, status: 0); |
4177 | cm_node->accelerated = true; |
4178 | complete(&cm_node->establish_comp); |
4179 | cm_node->cm_core->cm_free_ah(cm_node); |
4180 | return; |
4181 | |
4182 | error: |
4183 | iwqp->cm_id = NULL; |
4184 | cm_id->provider_data = NULL; |
4185 | irdma_send_cm_event(cm_node: event->cm_node, cm_id, type: IW_CM_EVENT_CONNECT_REPLY, |
4186 | status); |
4187 | irdma_rem_ref_cm_node(cm_node: event->cm_node); |
4188 | } |
4189 | |
4190 | /** |
4191 | * irdma_cm_event_reset - handle reset |
4192 | * @event: the info for cm_node of connection |
4193 | */ |
4194 | static void irdma_cm_event_reset(struct irdma_cm_event *event) |
4195 | { |
4196 | struct irdma_cm_node *cm_node = event->cm_node; |
4197 | struct iw_cm_id *cm_id = cm_node->cm_id; |
4198 | struct irdma_qp *iwqp; |
4199 | |
4200 | if (!cm_id) |
4201 | return; |
4202 | |
4203 | iwqp = cm_id->provider_data; |
4204 | if (!iwqp) |
4205 | return; |
4206 | |
4207 | ibdev_dbg(&cm_node->iwdev->ibdev, |
4208 | "CM: reset event %p - cm_id = %p\n" , event->cm_node, cm_id); |
4209 | iwqp->cm_id = NULL; |
4210 | |
4211 | irdma_send_cm_event(cm_node, cm_id: cm_node->cm_id, type: IW_CM_EVENT_DISCONNECT, |
4212 | status: -ECONNRESET); |
4213 | irdma_send_cm_event(cm_node, cm_id: cm_node->cm_id, type: IW_CM_EVENT_CLOSE, status: 0); |
4214 | } |
4215 | |
4216 | /** |
4217 | * irdma_cm_event_handler - send event to cm upper layer |
4218 | * @work: pointer of cm event info. |
4219 | */ |
4220 | static void irdma_cm_event_handler(struct work_struct *work) |
4221 | { |
4222 | struct irdma_cm_event *event = container_of(work, struct irdma_cm_event, event_work); |
4223 | struct irdma_cm_node *cm_node; |
4224 | |
4225 | if (!event || !event->cm_node || !event->cm_node->cm_core) |
4226 | return; |
4227 | |
4228 | cm_node = event->cm_node; |
4229 | trace_irdma_cm_event_handler(cm_node, type: event->type, NULL); |
4230 | |
4231 | switch (event->type) { |
4232 | case IRDMA_CM_EVENT_MPA_REQ: |
4233 | irdma_send_cm_event(cm_node, cm_id: cm_node->cm_id, |
4234 | type: IW_CM_EVENT_CONNECT_REQUEST, status: 0); |
4235 | break; |
4236 | case IRDMA_CM_EVENT_RESET: |
4237 | irdma_cm_event_reset(event); |
4238 | break; |
4239 | case IRDMA_CM_EVENT_CONNECTED: |
4240 | if (!event->cm_node->cm_id || |
4241 | event->cm_node->state != IRDMA_CM_STATE_OFFLOADED) |
4242 | break; |
4243 | irdma_cm_event_connected(event); |
4244 | break; |
4245 | case IRDMA_CM_EVENT_MPA_REJECT: |
4246 | if (!event->cm_node->cm_id || |
4247 | cm_node->state == IRDMA_CM_STATE_OFFLOADED) |
4248 | break; |
4249 | irdma_send_cm_event(cm_node, cm_id: cm_node->cm_id, |
4250 | type: IW_CM_EVENT_CONNECT_REPLY, status: -ECONNREFUSED); |
4251 | break; |
4252 | case IRDMA_CM_EVENT_ABORTED: |
4253 | if (!event->cm_node->cm_id || |
4254 | event->cm_node->state == IRDMA_CM_STATE_OFFLOADED) |
4255 | break; |
4256 | irdma_event_connect_error(event); |
4257 | break; |
4258 | default: |
4259 | ibdev_dbg(&cm_node->iwdev->ibdev, |
4260 | "CM: bad event type = %d\n" , event->type); |
4261 | break; |
4262 | } |
4263 | |
4264 | irdma_rem_ref_cm_node(cm_node: event->cm_node); |
4265 | kfree(objp: event); |
4266 | } |
4267 | |
4268 | /** |
4269 | * irdma_cm_post_event - queue event request for worker thread |
4270 | * @event: cm node's info for up event call |
4271 | */ |
4272 | static void irdma_cm_post_event(struct irdma_cm_event *event) |
4273 | { |
4274 | refcount_inc(r: &event->cm_node->refcnt); |
4275 | INIT_WORK(&event->event_work, irdma_cm_event_handler); |
4276 | queue_work(wq: event->cm_node->cm_core->event_wq, work: &event->event_work); |
4277 | } |
4278 | |
4279 | /** |
4280 | * irdma_cm_teardown_connections - teardown QPs |
4281 | * @iwdev: device pointer |
4282 | * @ipaddr: Pointer to IPv4 or IPv6 address |
4283 | * @nfo: Connection info |
4284 | * @disconnect_all: flag indicating disconnect all QPs |
4285 | * |
4286 | * teardown QPs where source or destination addr matches ip addr |
4287 | */ |
4288 | void irdma_cm_teardown_connections(struct irdma_device *iwdev, u32 *ipaddr, |
4289 | struct irdma_cm_info *nfo, |
4290 | bool disconnect_all) |
4291 | { |
4292 | struct irdma_cm_core *cm_core = &iwdev->cm_core; |
4293 | struct list_head *list_core_temp; |
4294 | struct list_head *list_node; |
4295 | struct irdma_cm_node *cm_node; |
4296 | struct list_head teardown_list; |
4297 | struct ib_qp_attr attr; |
4298 | |
4299 | INIT_LIST_HEAD(list: &teardown_list); |
4300 | |
4301 | rcu_read_lock(); |
4302 | irdma_teardown_list_prep(cm_core, teardown_list: &teardown_list, ipaddr, nfo, disconnect_all); |
4303 | rcu_read_unlock(); |
4304 | |
4305 | list_for_each_safe (list_node, list_core_temp, &teardown_list) { |
4306 | cm_node = container_of(list_node, struct irdma_cm_node, |
4307 | teardown_entry); |
4308 | attr.qp_state = IB_QPS_ERR; |
4309 | irdma_modify_qp(ibqp: &cm_node->iwqp->ibqp, attr: &attr, attr_mask: IB_QP_STATE, NULL); |
4310 | if (iwdev->rf->reset) |
4311 | irdma_cm_disconn(iwqp: cm_node->iwqp); |
4312 | irdma_rem_ref_cm_node(cm_node); |
4313 | } |
4314 | } |
4315 | |
4316 | /** |
4317 | * irdma_qhash_ctrl - enable/disable qhash for list |
4318 | * @iwdev: device pointer |
4319 | * @parent_listen_node: parent listen node |
4320 | * @nfo: cm info node |
4321 | * @ipaddr: Pointer to IPv4 or IPv6 address |
4322 | * @ipv4: flag indicating IPv4 when true |
4323 | * @ifup: flag indicating interface up when true |
4324 | * |
4325 | * Enables or disables the qhash for the node in the child |
4326 | * listen list that matches ipaddr. If no matching IP was found |
4327 | * it will allocate and add a new child listen node to the |
4328 | * parent listen node. The listen_list_lock is assumed to be |
4329 | * held when called. |
4330 | */ |
4331 | static void irdma_qhash_ctrl(struct irdma_device *iwdev, |
4332 | struct irdma_cm_listener *parent_listen_node, |
4333 | struct irdma_cm_info *nfo, u32 *ipaddr, bool ipv4, |
4334 | bool ifup) |
4335 | { |
4336 | struct list_head *child_listen_list = &parent_listen_node->child_listen_list; |
4337 | struct irdma_cm_listener *child_listen_node; |
4338 | struct list_head *pos, *tpos; |
4339 | bool node_allocated = false; |
4340 | enum irdma_quad_hash_manage_type op = ifup ? |
4341 | IRDMA_QHASH_MANAGE_TYPE_ADD : |
4342 | IRDMA_QHASH_MANAGE_TYPE_DELETE; |
4343 | int err; |
4344 | |
4345 | list_for_each_safe (pos, tpos, child_listen_list) { |
4346 | child_listen_node = list_entry(pos, struct irdma_cm_listener, |
4347 | child_listen_list); |
4348 | if (!memcmp(p: child_listen_node->loc_addr, q: ipaddr, size: ipv4 ? 4 : 16)) |
4349 | goto set_qhash; |
4350 | } |
4351 | |
4352 | /* if not found then add a child listener if interface is going up */ |
4353 | if (!ifup) |
4354 | return; |
4355 | child_listen_node = kmemdup(p: parent_listen_node, |
4356 | size: sizeof(*child_listen_node), GFP_ATOMIC); |
4357 | if (!child_listen_node) |
4358 | return; |
4359 | |
4360 | node_allocated = true; |
4361 | memcpy(child_listen_node->loc_addr, ipaddr, ipv4 ? 4 : 16); |
4362 | |
4363 | set_qhash: |
4364 | memcpy(nfo->loc_addr, child_listen_node->loc_addr, |
4365 | sizeof(nfo->loc_addr)); |
4366 | nfo->vlan_id = child_listen_node->vlan_id; |
4367 | err = irdma_manage_qhash(iwdev, cminfo: nfo, etype: IRDMA_QHASH_TYPE_TCP_SYN, mtype: op, NULL, |
4368 | wait: false); |
4369 | if (!err) { |
4370 | child_listen_node->qhash_set = ifup; |
4371 | if (node_allocated) |
4372 | list_add(new: &child_listen_node->child_listen_list, |
4373 | head: &parent_listen_node->child_listen_list); |
4374 | } else if (node_allocated) { |
4375 | kfree(objp: child_listen_node); |
4376 | } |
4377 | } |
4378 | |
4379 | /** |
4380 | * irdma_if_notify - process an ifdown on an interface |
4381 | * @iwdev: device pointer |
4382 | * @netdev: network device structure |
4383 | * @ipaddr: Pointer to IPv4 or IPv6 address |
4384 | * @ipv4: flag indicating IPv4 when true |
4385 | * @ifup: flag indicating interface up when true |
4386 | */ |
4387 | void irdma_if_notify(struct irdma_device *iwdev, struct net_device *netdev, |
4388 | u32 *ipaddr, bool ipv4, bool ifup) |
4389 | { |
4390 | struct irdma_cm_core *cm_core = &iwdev->cm_core; |
4391 | unsigned long flags; |
4392 | struct irdma_cm_listener *listen_node; |
4393 | static const u32 ip_zero[4] = { 0, 0, 0, 0 }; |
4394 | struct irdma_cm_info nfo = {}; |
4395 | u16 vlan_id = rdma_vlan_dev_vlan_id(dev: netdev); |
4396 | enum irdma_quad_hash_manage_type op = ifup ? |
4397 | IRDMA_QHASH_MANAGE_TYPE_ADD : |
4398 | IRDMA_QHASH_MANAGE_TYPE_DELETE; |
4399 | |
4400 | nfo.vlan_id = vlan_id; |
4401 | nfo.ipv4 = ipv4; |
4402 | nfo.qh_qpid = 1; |
4403 | |
4404 | /* Disable or enable qhash for listeners */ |
4405 | spin_lock_irqsave(&cm_core->listen_list_lock, flags); |
4406 | list_for_each_entry (listen_node, &cm_core->listen_list, list) { |
4407 | if (vlan_id != listen_node->vlan_id || |
4408 | (memcmp(p: listen_node->loc_addr, q: ipaddr, size: ipv4 ? 4 : 16) && |
4409 | memcmp(p: listen_node->loc_addr, q: ip_zero, size: ipv4 ? 4 : 16))) |
4410 | continue; |
4411 | |
4412 | memcpy(nfo.loc_addr, listen_node->loc_addr, |
4413 | sizeof(nfo.loc_addr)); |
4414 | nfo.loc_port = listen_node->loc_port; |
4415 | nfo.user_pri = listen_node->user_pri; |
4416 | if (!list_empty(head: &listen_node->child_listen_list)) { |
4417 | irdma_qhash_ctrl(iwdev, parent_listen_node: listen_node, nfo: &nfo, ipaddr, ipv4, |
4418 | ifup); |
4419 | } else if (memcmp(p: listen_node->loc_addr, q: ip_zero, |
4420 | size: ipv4 ? 4 : 16)) { |
4421 | if (!irdma_manage_qhash(iwdev, cminfo: &nfo, |
4422 | etype: IRDMA_QHASH_TYPE_TCP_SYN, mtype: op, |
4423 | NULL, wait: false)) |
4424 | listen_node->qhash_set = ifup; |
4425 | } |
4426 | } |
4427 | spin_unlock_irqrestore(lock: &cm_core->listen_list_lock, flags); |
4428 | |
4429 | /* disconnect any connected qp's on ifdown */ |
4430 | if (!ifup) |
4431 | irdma_cm_teardown_connections(iwdev, ipaddr, nfo: &nfo, disconnect_all: false); |
4432 | } |
4433 | |